AR Buffer System Archives - AdVance Armament

LBE AR 308 RECOIL SPRING RIFLE

Kyle Vance — Sat, 06 Jun 2026 09:07:12 +0000

The LBE .308 Rifle Length Recoil Spring is made from high quality 17-7 Steel. Their recoil springs are tough and dependable to ensure your rifle is at its peak performance. LBE Unlimited is a leading producer of US Made gun parts and accessories.

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ONE HORSE AR15 CARBINE BUFFER – TUBE KIT

Tue, 19 May 2026 05:06:12 +0000

ONE HORSE AR15 CARBINE BUFFER - TUBE KIT

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GEISSELE PREMIUM MIL SPEC – BUFFER TUBE DDC

Thu, 14 May 2026 09:08:05 +0000

GEISSELE PREMIUM MIL SPEC - BUFFER TUBE DDC

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FORTIS STANDARD CASTLE NUT

Fri, 08 May 2026 17:06:50 +0000

The Fortis Standard Castle Nut is manufactured from a solid piece of billet aircraft grade aluminum that offers a significant weight reduction to your castle nut. If you’re trying to save ounces, this is a great way, but without sacrificing durability. The castle nut will fit onto mil-spec buffer tubes and quickly upgrade the form and function of your build.

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FORTIS K1 ENHANCD AR15 END PLATE FDE

Mon, 20 Apr 2026 17:06:51 +0000

When designing their new Lightweight Enhanced (LE) Castle Nut & End Plate System, Fortis came up with two systems that virtually eliminates the risk of your castle nut ever backing out. With two lockdown systems (K1 & K2), Fortis has engineered a solution to install the castle nut onto the end plate that is not only robust, but also stands true to their brand of innovation and ingenuity. The K1 system features a tapered castle nut that seals itself onto the end plate. This ultra precision snug fit allows the castle nut to seat and seal itself into place without the need of staking the end plate. No ratcheting, no set screws, no backing out and no failures. All of these features at only .59 oz / 16.8 grams!

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FORTIS K1 ENHANCD AR15 END PLATE GRY

Mon, 20 Apr 2026 17:06:50 +0000

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SOLGW CASTLE NUT

Mon, 20 Apr 2026 17:06:22 +0000

Sons of Liberty Gun Works is a manufacturer of quality firearms and parts, perfect for your next build, next competition, or next line of defense. Their small parts fit most mil-spec firearms.

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LBE 4 POSITION BUFFER TUBE KIT

Fri, 10 Apr 2026 14:47:29 +0000

From upper receivers and bolt carrier groups to barrels, grips, gas tubes, buffer tubes, springs, and more, every LBE component is designed and built right here in the United States. They take immense pride in supporting American jobs, maintaining rigorous quality control, and ensuring their customers receive parts they can trust, no matter the application.

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TAPCO BUFFER TUBE KIT

Fri, 03 Apr 2026 01:07:17 +0000

TAPCO BUFFER TUBE KIT

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KYNSHOT SPACER WEIGHT – FOR AR-15 AND LR-308 BUFFER

Tue, 10 Mar 2026 14:09:47 +0000

PRODUCT SPECIFICATIONS:
Dimension	0.85 X 0.95 X 0.85
Height	0.8500
Width	0.9500
Length	0.8500
TYPE/COLOR	BUFFER SPACER WEIGHT
SIZE/FINISH	AR-15 AND AR-10
MATERIAL	STAINLESS STEEL
AR-15 ACCESSORY	Y
OTHER FEATURES:	DELAYS INITIAL BOLT MOVEMENT
	SLOWS BOLT VELOCITY
	HELPS KEEP BUFFER ALIGNED
	CAN BE USED TO MAKE SHORT STRK
	ADDS .75″ IN LENGTH
NO DIRECT SHIP TO CALIFORNIA

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