Si Defense

SI Defense 308 AR Generation II Stripped Upper Receiver

SI Defense is now operating as FALKOR Defense

FALKOR Defense is a world class firearm manufacturer, with a doctrine that emphasizes research and development that produces ingenuity and innovation. FALKOR Defense is located in Kalispell Montana, where its 50,000 square foot facility manufactures its products using the latest aerospace technology in CNC Machining, Anodizing, and Assembly. Its products are 100% made in the U.S.A and are held to the highest manufacturing standards.

As FALKOR Defense continues to evolve, its legacy continues to grow as one of the most innovative, accurate, and reliable firearm manufacturers in the world. The mission is to continually exceed the expectations of the consumer by delivering firearm technology that is relevant and value added without jeopardizing quality and reliability.

Here’s a few pictures of my SI Defense Generation II Billet Generation II Stripped Upper Receiver. The upper is DPMS/SR25 pattern.

SI Defense Generation II 308 Upper Receiver. Falkor Defense

SI Defense Generation II 308 Upper Receiver. Falkor Defense

SI Defense Generation II 308 Upper Receiver. Falkor Defense

SI Defense Generation II 308 Upper Receiver. Falkor Defense

Upper Receivers

.308 AR Upper Receivers:


Brownells has complete uppers in stock

Click here.


Black Rain Ordnance

The Black Rain Ordnance receivers sets are gaining popularity on the forum as Brownells has had them in stock pretty regularly which obviously is critical given the current political climate. Black Rain Ordnance also does limited runs of special finishes. The skulls was a hit when available. The two finishes above are the standards. One being Milspec and the other being “Norguard” electroless nickel.

Specifications: Stripped AR-style .308 upper and lower receiver sets are fully machined from 7075 T6 billet aluminum and matched for ultra-stable full-contact fit without slop or rattles. These sets accept DPMS LR-308 pattern components to allow for the installation of a variety of aftermarket parts. Flattop uppers feature a T-marked MIL-STD 1913 Picatinny rail. Lowers have an integral triggerguard for maximum structural rigidity, and have pictogram selector markings for safe, fire, and three-round burst firing positions. Accepts DPMS-pattern magazines, including the Magpul .308 PMAG. Available in with Parkerized finish or the Nor-Guard™ electroless nickel finish for outstanding resistance to corrosion and surface wear.


FULTON ARMORY FAR 308 AR UPPER RECEIVERS

FULTON ARMORY is well-known for manufacturing very high quality rifles with premium materials a reasonable price. Fulton Armory rifles feature premium barrels from Douglas and Krieger blanks. Fulton Armory rifles are DPMS compatible to utilize LR-308/SR-25 and Magpul Pmags.

The receiver picatinney rail is the height of the original DPMS receiver.

FULTON ARMORY FAR 308 AR UPPER RECEIVERS


DPMS PANTHER ARMS LR-308 FLATTOP UPPER RECEIVER

.308/7.62 NATO upper receiver comes fully assembled with bolt/carrier, charging handle, free-float handguard, gas block, and barrel. Lets you change your LR-308 from a sporter to a match rifle or long-range varminter in just minutes—or build a completely new gun customized to your exact needs Beefy, thick-walled receiver of extruded 6066 T6 aluminum is hardcoat anodized to military standards for extra surface strength, with a hard, black Teflon coating to resist scuffs and scratches. Free-floated forend of smooth, rigid machined aluminum gives plenty of air space to protect your hand from a hot barrel during sustained shooting. Includes swivel stud and QD sling swivel. All barrels have 1-10″ twist for proper bullet stabilization. Bull Barrel models have a heavy .920″ O.D. barrel with recessed 90° target crown. Snag-free, smooth-side receiver without ejection port cover, shell-deflector, or forward assist; an elevated Picatinny rail allows easy scope mounting without adding a riser mount. Lightweight, aluminum gas block has plenty of metal to withstand the hot gasses from thousands of firing cycles; topside Picatinny rail lets you mount the front sight of your choice, including flip-up models. Available with 18″ barrel of 4140 chrome-moly (CM) carbon steel alloy and 7¼” carbine-length forend, or 24″ bull barrel of 416 stainless steel (SS) with 12″ rifle-length forend. AP4 Carbine has A3-style Lo-Rider receiver with forward assist and ejection port cover. 16″ USGI-style, light contour barrel of 4140 chrome-moly, with M203 mount cutout, 7¼” forend, and A2-type gas block/front sight tower with bayonet lug and sling swivel. Includes Panther flash suppressor with gas-dispersing helical ports and aggressive, serrated CQB tip.

DPMS PANTHER ARMS LR-308 FLATTOP UPPER RECEIVER

SPECS: Receiver/Handguard/Gas Block/Charging Handle – 6066 T6 aluminum, anodized and teflon coated, black. Bolt/Carrier – 4140 steel, parkerized, matte black. Barrel – 4140 chrome-moly steel, parkerized, matte black, or 416 stainless steel, natural finish. Fits DPMS LR-308 lower receivers only.


Mega Arms

The MA-TEN billet receiver set will accept ALL DPMS & Knight Armament parts. All Armalite parts with the exception of the barrel nut, and magazine. Build your ultimate hunting, tactical or target rifle without having to compromise. The MA-TEN will be sold only in sets (upper and lower) including a charging handle, threaded bolt catch pin, take down pins, tensioning screw, and door. This was done to guarantee the best possible upper to lower fit and finish. Using the MA-TEN platform also allows you the most options on your next build.

The images below are from my set purchased February 2011

MEGA ARMS MA-TEN Receiver Set MEGA ARMS MA-TEN Receiver Set


Armalite AR-10 UPPER RECEIVER

Armalite pioneered the 308 Winchester AR platform. There is probably no other manufacturer with as many upper receiver options as Armalite. Armalite offers upper receivers for every purpose from hunting, competition, personal protection, and military applications. Armalite is battle proven. Additionally Armalite can build one-of-a-kind upper receivers in their Premier Rifles Division.

Armalite AR-10 UPPER RECEIVER


 

SI DEFENSE (FALKOR DEFENSE)

Below are a few pictures of my SI DEFENSE GENERATION II .308 AR STRIPPED UPPER RECEIVER. If anybody viewing this has a clue what the side picatinny rail is for please drop me a line.


JD MACHINE 308 RECEIVER SET

Here’s another company selling their UPPER and LOWER RECEIVERS in sets. This fine set belongs to DNP on the forum. Thanks to DNP for these pictures.

JD MACHINE 308 RECEIVER SET JD MACHINE 308 RECEIVER SET JD MACHINE 308 RECEIVER SET


Tactical Machining

TACTICAL MACHINING has some interesting offerings. You can purchase the stripped upper/lower lower, an 80% upper/lower that requires you to do the final 20% machining or complete receiver sets. There are plans to offer complete rifles in the near future.

Below is an example of the TACTICAL MACHINING 308 AR STRIPPER UPPER RECEIVER. This upper receiver fits DPMS pattern lower receivers as well as TACTICAL MACHINING’S own.

308AR Lower Receivers | 308 Receivers

308 AR Lower Receivers:

Note: This page remains in place for historic value as it relates to early AR 308, AR-10 and 308 AR development. Today the AR 308/308 AR platform is a pretty standard offering for many AR and rifle manufacturers.


Black Rain Ordnance 308 Receivers

Picture of a black coated Black Rain Ordnance 308 Receiver

Black Rain Ordnance 308 Receiver

Picture of an electroless coated Black Rain Ordnance 308 Receiver

Black Rain Ordnance 308 Receiver

The Black Rain Ordnance receivers sets are gaining popularity on the forum as Brownells has had them in stock pretty regularly which obviously is critical given the current political climate. Black Rain Ordnance also does limited runs of special finishes. The skulls was a hit when available. The two finishes above are the standards. One being Milspec and the other being “Norguard” electroless nickel.

Specifications:Stripped AR-style .308 upper and lower receiver sets are fully machined from 7075 T6 billet aluminum and matched for ultra-stable full-contact fit without slop or rattles. These sets accept DPMS LR-308 pattern components to allow for the installation of a variety of aftermarket parts. Flattop uppers feature a T-marked MIL-STD 1913 Picatinny rail. Lowers have an integral triggerguard for maximum structural rigidity, and have pictogram selector markings for safe, fire, and three-round burst firing positions. Accepts DPMS-pattern magazines, including the Magpul .308 PMAG. Available in with Parkerized finish or the Nor-Guard™ electroless nickel finish for outstanding resistance to corrosion and surface wear.


CMMG Stripped 308 Lower Receivers

Note: This CMMG information is for historic purposes only. CMMG now offers DPMS AR 308/308 AR receivers.

CMMG has some real interesting stripped lower receivers. Two are DPMS upper receiver compatible and the third is Armalite The most intriguing of the three though is the DPMS compatible lower that utilizes some of most least expensive and readily available magazines on the planet, H&K G3 magazines.

In addition to stripped lowers CMMG also builds lowers customized with a wide choice of options.

CMMG G3 Mag Compatible 308 AR Stripped Lower

Upper is compatible with DPMS .308 upper receivers with minor modification to upper receiver to allow for clearance of wider G3 magazine. With new mags available $3-5, this is a combo that cannot be beat. Lower is compatible with most popular aftermarket triggers currently on the market.

CMMG G3 Mag Compatible 308 Lower

CMMG G3 Mag Compatible 308 Lower

CMMG DPMS Mag Compatible .308 AR Stripped Lower

Upper is compatible with DPMS .308 upper receivers. Lower features solid billet construction and contoured finger rest and built in winter trigger guard.

Picture of CMMG G3 Mag Compatible 308 Lower

CMMG G3 Mag Compatible 308 Lower

CMMG AR-10 Compatible 308 AR Stripped Lower

Upper is compatible with Armalite AR10 upper receivers. Lower features solid billet construction and contoured finger rest and built in winter trigger guard.

Picture of CMMG AR-10 Compatible 308 AR Stripped Lower

CMMG AR-10 Compatible 308 AR Stripped Lower

Note: Some early CMMG 308 products had some tolerance issues. I would not suggest buying a used CMMG 308.


SI Defense

DPMS compatible .308 receivers and the HK G3 receiver sets are made from 100% billet 6061 or 7075 aluminum lowers and uppers that will fit DPMS parts. We are currently in production. Contact us now to place your order and for lead times. Orders are filled on a first-come-first-served basis. Lowers only available to FFL license holders only.

Please note: The HK G3 lower is not compatible with a DPMS upper, it must be modified. We will not modify a DPMS upper. You must purchase a matched set when ordering HK G3 compatible lower. The matched set will be compatible with DPMS hardware (lower parts kit and bolt carrier group.)

SI Defense HK G3 lowers will fit DPMS hardware and fit HK G3 magazines. SI Defense standard .308 lower and upper receivers will fit DPMS© hardware and magazines.

Picture of SI Defense 308 AR HK G3 Lower

SI Defense 308 AR HK G3 Lower

Picture of SI Defense .308AR HK G3 Lower

SI Defense 308 AR HK G3 Lower

Picture of SI Defense 308 Lower

SI Defense 308 Lower

Picture of SI Defense 308 Lower

SI Defense 308 Lower


DPMS LR-308

Picture of my DPMS LR-308 Lower

DPMS LR-308 Lower

Love them or hate them DPMS making 308 AR parts available is without a doubt largely responsible for giving the platform legs. It’s where all this started for me.


Iron Ridge Arms Company

Iron Ridge Arms manufactures some of the nicest looking receivers to be found. They are available in DPMS LR-308,SR25 and Armalite AR-10 patterns.

Iron Ridge Arms 308 Lower

Iron Ridge Arms 308 Lower


Eagle

Anyone have information on the status of Eagle Arms?


Fidelis Arms

Fidelis Arms – View their website for more information.

Fidelis Arms .308 AR

Fidelis Arms .308 AR


PATRIOT ORDNANCE FACTORY AR-STYLE .308 MACHINED LOWER RECEIVER

Stripped, semi-auto lower receiver is fully machined from U.S.-sourced 7075 T6 aluminum billet for superb strength and precise dimensions. Extra metal in the right places gives a big payoff in added support and rigidity with minimal extra weight. AR-style .308 accepts mil-spec and aftermarket accessories, so you can select the upper receiver, receiver extension, trigger group, pistol grip, and buttstock that best serve your needs — the perfect foundation for a custom tactical rifle. Integral, oversized triggerguard, machined as part of the receiver, further enhances structural rigidity and provides plenty of clearance for trigger finger when wearing gloves. Radiused inside and outside edges protect finger from cuts and scrapes when mounting weapon quickly or during extended fire. Flared magwell with smoothly radiused inside corners helps ensure fast reloads, without fumbling, when seconds count. Cut for ambidextrous bolt release to allow strong- or weak-hand operation; right-side button included with receiver. Easy-to-see laser etched, international “fire” and “safe” symbols give the operator instant, intuitive feedback on the weapon’s safety status in high-stress situations. Mil-spec hardcoat anodized for additional surface strength and corrosion resistance before application of the hard, self-lubricating Teflon® outer coating that’s almost impervious to abrasion and scratches. All heat-treatment, plating, and coatings are applied by U.S.-owned and operated contractors.

PATRIOT ORDNANCE FACTORY AR-STYLE 308 MACHINED LOWER RECEIVER

PATRIOT ORDNANCE FACTORY AR-STYLE .308 MACHINED LOWER RECEIVER

SPECS: 7075 T6 aluminum, hardcoat anodized. Small-pin, .154” (3.9mm) hammer/trigger pin holes. .250” (6.3mm) pivot/takedown holes. Accepts AR-style .308/7.62mm upper receivers from Patriot Ordnance, DPMS, and Remington Arms. Uses standard small-pin AR-15 trigger, pistol grip, takedown pin, and receiver extension. Requires .308 buffer, buffer spring, pivot pin. Matte medium gray finish. FFL required for purchase.


Aero Precision SPR-2 .308 Stripped Lower Receiver

Aero Precision


Cobb MCR 308

The MCR (Multi-Caliber-Rifle) series rifles are chambered in a long list of calibers, from 9mm to 338 Lapua and pretty much everything in between.

MCR stands for Multi-Caliber-Rifle and it is built on the AR type design. MCR Semi-Automatic rifles come in four different models which interchange with each other from one series to the next. To change calibers for example from a .223 (MCR100) to .308 (MCR200) you simply change the upper receiver and magazine module.

To change calibers on the same series rifle from one caliber to another within the same series for example, on an MCR400 from 300 Winchester Magnum to 338 Lapua Magnum you simply change out the barrel and bolt.

Lower receivers and magazine module made out of T6-6061aircraft aluminum. AR type pistol grip and butt stock. AR type trigger group parts that interchange with standard AR’s.

The Cobb system is propriety and will not work with Armalite or DPMS uppers. The Cobb MCR utilizes HK G3 magazines

Cobb was purchased by Bushmaster and it’s fate is unclear

 


Hesse/Vulcan AR308

Hesse had quality issues and sold the design to Vulcan.They have a reputation of being low quality under both names.


Rock River Arms LAR-308 308 AR


Fulton Armory FAR-308 Titan


Noveske


Larue Tactical AR308


Remington

Remington .308 AR Rifles are rebadged DPMS. They are part of the same company.


Kaiser Military Technologies


JD Machine 308


Bushmaster 308

Bushmaster had some issues with their .308 AR’s and sold the design to Rock River Arms who solved the problems. Update: Bushmaster is back in the .308 AR game. The Bushmaster 308 ORC is a re-badged DPMS LR-308.

Update – Early 2011 Freedom Group is closing the Bushmaster plane in Maine and consolidating the Bushmaster line with their DPMS line. Who knows if Bushmaster brand name will continue.


Mega Arms

The MA-TEN billet receiver set will accept ALL DPMS & Knight Armament parts. All Armalite parts with the exception of the barrel nut, and magazine. Build your ultimate hunting, tactical or target rifle without having to compromise. The MA-TEN will be sold only in sets (upper and lower) including a charging handle, threaded bolt catch pin, take down pins, tensioning screw, and door. This was done to guarantee the best possible upper to lower fit and finish. Using the MA-TEN platform also allows you the most options on your next build.

MEGA ARMS MA-TEN Receiver Set

MEGA ARMS MA-TEN Receiver Set

MEGA ARMS MA-TEN Receiver Set

MEGA ARMS MA-TEN Receiver Set


Spikes Tactical

To date I have only seen some 3D CAD renderings of their 308 lowers.


Tactical Machining AR 308 Lowers

TACTICAL MACHINING has some interesting AR 308 offerings. You can purchase the stripped upper/lower lower, an 80% upper/lower that requires you to do the final 20% machining or complete receiver sets. There are plans to offer complete rifles in the near future.

Picture of TACTICAL MACHINING LOWER RECEIVER

Tactical Machining AR 308 Lowers

TACTICAL MACHINING LOWER RECEIVER

Tactical Machining AR 308 Lowers

Tactical Machining AR 308 Lowers Right View

Tactical Machining AR 308 Lowers Right View

TACTICAL MACHINING 308 LOWER RECEIVER

TACTICAL MACHINING 308 LOWER RECEIVER

TACTICAL MACHINING 308 LOWER RECEIVER SET

TACTICAL MACHINING 308 LOWER RECEIVER SET

TACTICAL MACHINING 308 RIFLE

TACTICAL MACHINING 308 RIFLE

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Black Rain Ordnance 308 AR Lower Receivers and 308 AR Matched Receiver Sets

Black Rain Ordnance AR308 308 AR Lower Receivers for your next 308 semi auto rifle build

Black Rain Ordnance 308 AR Lower Receivers and 308 AR Matched Receiver Sets

Picture of Black Rain Ordnance 308 Receiver Set

Black Rain Ordnance 308 AR Receiver Set – Black

Black Rain Ordnance 308AR Receiver Set - Coated - 308 AR Lower Receivers

Black Rain Ordnance 308 AR Receiver Set – Coated

The Black Rain Ordnance AR308 receivers sets are gaining popularity on the forum as Brownells has had them in stock pretty regularly which obviously is critical given the current political climate. Black Rain Ordnance also does limited runs of special finishes. The skulls was a hit when available. The two finishes above are the standards. One being Milspec and the other being “Norguard” electroless nickel.

Specifications:Stripped AR-style .308 upper and lower receiver sets are fully machined from 7075 T6 billet aluminum and matched for ultra-stable full-contact fit without slop or rattles. These sets accept DPMS LR-308 pattern components to allow for the installation of a variety of aftermarket parts.

Flattop uppers feature a T-marked MIL-STD 1913 Picatinny rail. Lowers have an integral triggerguard for maximum structural rigidity, and have pictogram selector markings for safe, fire, and three-round burst firing positions. Accepts DPMS-pattern magazines, including the Magpul .308 PMAG. Available in with Parkerized finish or the Nor-Guard™ electroless nickel finish for outstanding resistance to corrosion and surface wear.

See more 308 Receivers here

Visit Black Rain Ordnance

308 AR Lower Receivers


 

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Black Rain Ordnance 308 Owners Manual

View or download the Black Rain Ordnance Owners Manual below.

Black Rain Ordnance Owners Manual

Magpul 25 Round 308 PMAGS, 308 AR PMAGS For Sale Cheap, AR308 Magazines

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