AR-15 Buffer Tube Parts
Various sets and individual items that make up the receiver extension are all here on AT3.
The buffer tube, spring, buffer, castle nut, and the locking ring are all available for the milspec or the commercial variants.
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- Buffer Tube Parts - Luth-AR (13)
- Buffer Tube Parts - LBE Unlimited (13)
- Buffer Tube Parts - Strike Industries (12)
- Buffer Tube Parts - AT3 Tactical (10)
- Buffer Tube Parts - Bravo Company (6)
- Buffer Tube Parts - Armaspec (6)
- Buffer Tube Parts - Odin Works (5)
- Buffer Tube Parts - JP Enterprises (5)
- Buffer Tube Parts - UTG (4)
- Receiver Extension Buffer Parts - Kaw Valley Precision (4)
- Buffer Tube Parts - Geissele (4)
- Buffer Parts - Fortis (4)
- Buffer Tube Parts - Spike's Tactical (3)
- Buffer Tube Parts - Midwest Industries (3)
- Buffer Tube Parts - Angstadt Arms (3)
- Buffer Tube Parts - Aero Precision (3)
- Buffer Tube Parts - VLTOR Weapon Systems (2)
- Buffer Tube Parts - Timber Creek Outdoors (2)
- Buffer Parts - KE Arms (2)
- Buffer Tube Parts - KAK Industry (2)
- Buffer Tube Parts - Yankee Hill Machine (1)
- Buffer Tube Parts - Sylvan Arms (1)
- Buffer Tube Parts - Radian Weapons (1)
- Buffer Parts - Phase 5 (1)
- Buffer Tube Parts - LANTAC USA (1)
- Buffer Tube Parts - Double Star USA (1)
- Buffer Tube Parts - CMMG (1)
- Buffer Tube Parts - Battle Arms Development (1)
- Buffer Tube Parts - ATI (1)
- Buffer Tube Parts - Magpul Industries (1)
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- Buffer Tube Parts - Black (37)
- Receiver Extension Buffer Parts - Stainless (19)
- Buffer Tube Parts - Flat Dark Earth (17)
- Buffer Tube Parts - Red (15)
- Buffer Tube Parts - Blue (11)
- Buffer Tube Parts - Gray (9)
- Buffer Tube Parts - OD Green (9)
- Buffer Parts - Tungsten (6)
- Buffer Tube Parts - Burnt Bronze (5)
- Buffer Tube Parts - Pink (4)
- Buffer Tube Parts - Titanium (4)
- Buffer Tube Parts - Brown (3)
- Buffer Tube Parts - Purple (2)
- Receiver Extension Buffer Parts - Tan (1)
- Buffer Tube Parts - Gold (1)
- Buffer Tube Parts - Silver (1)
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Magpul ASAP Ambidextrous Sling Attachment Point QD Endplate
A Functional Replacement For AR15/M4 Carbine Stock Receiver Endplate The Magpul Quick Detach Ambidextrous Sling Attachment Point is designed to replace the standard AR15/M4 carbine stock receiver endplate. It provides... -
RECOMMENDED
Odin Works Adjustable AR-15 Buffer Weight – Heavy
Heavy Steel Buffer for Overgassed or Blowback AR15 In the world of AR15s, you may have a specialized firearm that requires a specifically tuned gas system. Especially for rifles that... -
KAK Industry K-SPEC Enhanced AR-15 PCC Buffer with Flatwire Spring
KAK Industry K-SPEC Enhanced AR-15 PCC Buffer with Flatwire Spring The K-SPEC Enhanced AR15 PCC Buffer is a cutting-edge recoil management solution specifically engineered for the AR15 Pistol Caliber Platform....4 Options -
Armaspec A1/A2 Buffer Adapter for Stealth Recoil Spring
A Simple Drop-In Solution for using the Stealth Recoil Spring in a Fixed Stock If you have a fixed stock and rifle-length buffer assembly, you're probably short on options for... -
Luth-AR AR-15 Carbine Buffer Spring
Luth-AR Carbine Buffer Spring for AR-15 This AR-15 buffer spring from Luth-AR is a perfect replacement for a worn-out recoil spring in a well-used rifle. This spring drops into standard... -
LBE Unlimited Ambidextrous Sling Mount Receiver End Plate
LBE Unlimited Ambidextrous End Plate The LBE Unlimited ARAMEPL is an ambidextrous end plate designed for the AR 15 rifle. It comes equipped with sling loops, allowing the user to... -
Armaspec Braided AR-15 Buffer Spring – BBS
Braided Buffer Spring for Standard AR-15 Buffers Armaspec's Braided Buffer Spring (BBS) brings better long-term performance and reliability than a standard carbine spring. The BBS's three strand design features 51... -
KAK Industry K-SPEC Enhanced AR-15 Buffer with Flatwire Spring
KAK Industry K-SPEC Enhanced AR-15 Buffer with Flatwire Spring The KAK Industry K-SPEC Enhanced AR-15 Buffer with Flatwire Spring is a top-of-the-line buffer upgrade designed specifically for AR-15 rifles. Crafted...3 Options3 Options3 Options -
Aero Precision AR-15/AR-10 Enhanced Carbine Buffer Tube
Aero Precision Enhanced AR-15 Buffer Tube The new Aero Precision Enhanced buffer tube offers numerous improvements over older style buffer tubes. While these tubes retain mil-spec dimensions to accept a...6 Options6 Options6 Options -
Bravo Company QD Receiver End Plate for AR-15
Bravo Company QD Receiver End Plate for AR-15 The Bravo Company QD End Plate is a high-quality product designed to fit AR15/M16 rifles while featuring a sleek black finish that... -
Fortis K1 Enhanced End Plate with Tapered Castle Nut for AR 15
Lightweight AR-15 Castle Nut and Endplate with Friction Fit Fortis created the two-piece K1 system to eliminate the risk of the castle nut backing out, while maintaining light weight. The...7 Options -
Battle Arms Development AR-15 Buffers
Battle Arms Development AR-15 Buffers - Carbine and Heavy Battle Arms Development provides high quality US made recoil buffers for your AR-15. These buffers come in a range of weights,...4 Options -
Geissele Super 42 Braided Wire Buffer & Spring Combo, H2
Designed To Improve The Function & Reliability Of Your AR-15 The Geissele Super 42 Braided Wire Buffer & Spring Combo was designed to improve the function and reliability of your... -
Luth-AR .308 Carbine Buffer Spring for AR-10/LR308 Rifles
.308 Buffer Spring for AR-10 Style Rifles An important thing to note when you're building an AR-10 is that your buffer spring is not interchangeable with an AR-15. .308 buffer... -
Magpul ASAP – Ambidextrous Sling Attachment Point – for AR-15 – MAG500-BLK
Provides A Tactical Advantage By Minimizing Snagging The Magpul ASAP is a useful replacement for the standard AR15/M16 carbine stock receiver endplate. It provides a tactical advantage by minimizing snagging... -
Fortis K2 Enhanced End Plate with Locking Lever and Castle Nut
Ratcheting AR-15 Endplate and Castle Nut The K2 castle nut and endplate from Fortis features a locking lever to ensure your buffer tube never backs out, without need for staking...7 Options -
DoubleStar AR-15 Ambidextrous Loop End Plate
Upgraded End Plate For Multiple Carrying Options The DoubleStar AR-15 Ambidextrous Loop End Plate is an upgrade on the standard AR-15 stock end-plate that offers right-hand, left-hand, or ambidextrous carry... -
Law Tactical AR-15/AR-308 Folding Stock Adapter Gen 3-M
Keep it Short - The Adapter You Need For Folding AR-15/AR-10 Rifles The Law Tactical Folding Stock Adapter Gen 3-M is an innovative upgrade that will allow AR-15 and AR-10...2 Options -
10% Off!
Strike Industries Advanced AR 15 Receiver Tube
7 Position AR-15 Buffer Tube with Unique Facets The AR-15 buffer tube often gets neglected when considering builds or upgrades. That's because most are the same! Not so with the...4 Options -
Midwest Industries Side Folding Picatinny Stock Adapter with Stock Tube
Midwest Industries Side Folding Stock Tube The Midwest Industries Side Folding Picatinny Stock Adapter attaches easily to firearms with a 1913 rail at the rear. This side folding adapter features... -
Luth-AR A2 Length AR-15 Rifle Buffer Tube for Fixed Stocks
Luth-AR Fixed Rifle Buffer Tube for AR-15 This A1/A2 style buffer tube from Luth-AR threads into your standard lower receiver, and can host a fixed buttstock. This classic rifle length... -
Sylvan Arms AR-15 QD Lower Receiver End Plate – ARQD100
3-Attachment Point End Plate Good For Left & Right Handed Shooters This Sylvan Arms AR-15 QD Lower Receiver End Plate - ARQD100 is a replacement for your standard AR-15 lower... -
NEW
SilencerCo Bravo ASR Mount
SilencerCo Bravo ASR Mount The Bravo ASR Mount is an engineering marvel designed to ensure a secure and swift attachment method for suppressors to your firearm. This SilencerCo mount in... -
LBE Unlimited AR-15 Castle Nut
LBE Unlimited AR-15 Castle Nut The LBE Unlimited AR15 Castle Nut is an essential tool for keeping your firearm secure and in place. These AR15 Lower Parts, manufactured by the...
Other Lower Receiver Components for AR 15:
AR 15 Buffer Tube Parts (Receiver Extension)
AR-15 Triggers
Buttstocks
Lower Parts Kit for AR-15
Magazines & Parts
Pistol Grips
AR-15 Trigger Guards