ARMALITE AR-10 RIFLE PARTS
THE ARMALITE AR-10
You have no doubt arrived at this page looking for information on buying an AR-10, building an AR-10, or perhaps upgrading an AR-10 that you already own. If that is the case you have come to the right place. If your interest lies with the only true AR10 the Armalite AR-10 you have also come to the right place.
When I first started this site back in 2006 the landscape for the .308 AR platform was much different. There were a few brands that were “DPMS, SR25, M110 Compatible”, a few mongrel designs and the genuine Armalite AR-10. Today it’s an entirely different world. There are countless DPMS compatible manufacturers, there is also the DPMS GII platform and of course the Armalite AR-10. This causes a lot of confusion with current and prospective 308AR and AR-10 owners. To make matters worse Armalite now offers two variations of the AR-10, the AR-10 type “A” and the AR-10 type “B”. Read about those differences here.
ARMALITE AR-10 MODEL VARIATIONS: AR-10 SERIES A, AR-10 SERIES B
The most critical points to know are. The type “A” and “B” upper and lower receivers are not interchangeable. You must match the series type. Another critical point is with AR-10 magazines. The two different lower receivers use two different magazines. Expand the toggle below and read “Which Armalite AR-10 Uses Magpul PMAG 10 Magazines” to understand the magazine differences. To see a definitive visual comparison of the AR-10 lowers visit this page.
The purpose of this page is to serve as a reference for shooters looking to research the Armalite AR-10 rifles. No other brand will be covered here. The images and “Learn More” buttons will take you to dealers who stock AR-10 hardware. Currently, the best sources are Armalite, Primary Arms, and Eurooptic. AR-10 lower receivers are rarely in stock long so if you see availability act accordingly.
WHICH ARMALITE AR 10 USES MAGPUL PMAG 10 MAGAZINES?
WHICH ARMALITE AR-10 USES MAGPUL MAGAZINES?
- The Armalite AR-10 Series “A” Rifles uses and ships with Magpul PMAG LR/SR Magazines. This also makes it DPMS LR308, and KAC SR-25/M110 compatible. This is the most common magazine style for the large frame 308 AR, AR308 platform.
WHICH ARMALITE AR-10 USES FACTORY ARMALITE AR-10 MAGAZINES?
- The Armalite AR-10 Series “B” Rifles use genuine Armalite factory AR-10 magazines. These magazines are based on modified M-14 magazines. These magazines only work with Armalite branded AR-10 rifles.
To see a definitive visual comparison of the AR-10 lower receivers visit this page.
To understand the differences between the Armalite AR-10 Series “A” and Armalite AR-10 Series “B” Rifles read the AR-10A vs AR-10B Fact Sheet
ARMALITE AR-10 UPPER RECEIVER SKU: 10002001 AR-10 (B) Series
ARMALITE AR10 UPPER RECEIVER SKU# 100020001 AR-10 (B) Series – The Armalite AR-10® A4 B-Series flat-top upper receiver made from forged 7075-T6 aluminum. Features a flat-top with MIL-STD 1913 rail. Thread size 1-7/16″x18″ UNEF-3A. This AR-10®A4 complete upper is the Armalite standard flat top upper with the standard port door rod used for all AR-10®’s. *Compatible with Armalite AR-10® B-Series lowers.
ARMALITE AR-10 UPPER RECEIVER INCLUDES
- EA1165 AR-10® Port Door Assembly
- EA1171 AR-10® Port Door Rod
- EA1167 AR-10® / M-15™ Port Door Spring
- 10005001KIT AR-10® Forward Assist Kit
ARMALITE AR-10 STRIPPED LOWER RECEIVER (B-Series) SKU:EA0901G
ARMALITE AR-10 STRIPPED LOWER RECEIVER (B-Series) SKU:EA0901G, Genuine ArmaLite Lower Receiver Assembly. The same lower receivers used to build the superb Armalite AR-10® rifle line. Now available as individual parts or assemblies, these lower receivers are renowned for their quality of finish and for fine fit. 7.62mm NATO. “B” Pattern Lowers. Designed to be compatible with Armalite magazines.
ARMALITE AR-10 UPPER RECEIVER SKU: A10002001 AR-10 (A) Series
ARMALITE AR-10 UPPER RECEIVER SKU: A10002001 AR-10 (A) Series The Armalite AR-10® A4 A-Series flat-top upper receiver made from forged 7075-T6 aluminum. Features a flat-top with MIL-STD 1913 rail. Thread size 1-7/16″x18″ UNEF-3A. This AR-10®A4 complete upper is the Armalite standard flat top upper with the standard port door rod used for all AR-10®’s. *Compatible with Armalite AR-10® A-Series lowers.
ARMALITE AR-10 UPPER RECEIVER INCLUDES
- EA1165 AR-10® Port Door Assembly
- EA1171 AR-10® Port Door Rod
- EA1167 AR-10® / M-15™ Port Door Spring
- 10005001KIT AR-10® Forward Assist Kit
ARMALITE AR-10 STRIPPED LOWER RECEIVER (A-Series) SKU:EA0901AG
ARMALITE AR-10 STRIPPED LOWER RECEIVER (A-Series) SKU:EA0901AG, Genuine ArmaLite Lower Receiver Assembly. The same lower receivers used to build the superb Armalite AR-10® rifle line. Now available as individual parts or assemblies, these lower receivers are renowned for their quality of finish and for fine fit. 7.62mm NATO. “B” Pattern Lowers. Designed to be compatible with Magpul, DPMS/SR-25 magazines.
ARMALITE AR10 STANDARD BARREL NUT SKU: EA1149
ARMALITE AR10 STANDARD BARREL NUT SKU: EA1149
- Torque: 45-90 foot lbs
- Thread Size: 1-7/16″ X 18 UNEF-3A
- Caliber: .308
ARMALITE AR10 RIFLE BUFFER SKU: EA1090
ARMALITE AR10 RIFLE BUFFER SKU: EA1090 AR10 rifle length buffer to be used with A2 style stocks. Will not work 6 position collapsible stocks.
ARMALITE AR-10 CARBINE BUFFER SKU: EC0120 (H3 Heavy Buffer)
ARMALITE AR-10 CARBINE BUFFER SKU: EC0120 (H3 HEAVY BUFFER) The factory AR-10 Carbine Buffer is rarely available for purchase, Armalite seems to only be offering it in a kit that includes buffer tube and buffer spring. This is the buffer you must use with 6 position collapsible stocks.
The ArmaLite H3 heavy buffer is also ideally suited for severely overgassed AR-15 carbines and suppressed rifles, as well as 308 AR and AR-10 carbines with GI spec 8″ buffer tubes. 5.4 Ounces
Note: We recommend the Heavy Buffers buffer and modified AR-10 buffer spring. This is also the Magpul recommended setup for the UBR stock.
ARMALITE AR-10 BOLT CARRIER GROUP ASSEMBLY SKU: 10501001
AR-10 BOLT CARRIER GROUP ASSEMBLY SKU: 10501001, Constructed from 8620 steel, the Armalite AR-10® complete bolt carrier group is chrome lined and includes complete bolt assembly.. Bolt & Carrier constructed from 8620 STEEL. Gas key screws torqued to 55 inch/lbs.
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