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Receiver Extension 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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3 reviews
$67.85

- 6 Position Hard Coat Anodized T6 Aluminum Mil Spec Buffer Tube - Hard Coat Anodized T6 Aluminum Buffer - Military Spec Thread Diameter for a Tight Fit on AR-15 Receivers - Military Spec Tube Diameter to Provide a Tight Fit on After Market Buttstocks - Buffer Spring - Steel Military Grade E-Coating Castle Nut - Steel Military Grade E-Coating...

2 reviews
$57.45

The Troy Rifle Receiver Sling Adapter enhances reliability by securing receiver extension nut prevents rotation of buffer tube - Installs in less than 2 minutes - No gunsmithing required - Hardened T6 aluminum construction - Includes blackened stainless push down button Q.D. swivel - Made in the USA

2 reviews
$48.85

Troy Professional Grade and M4 BattleSling Mounts and adapters, swivel mounts and other sling accessories are all made from hardened aircraft aluminum with stainless steel push down buttons

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1 review
$67.85

- 6 Position Hard Coat Anodized T6 Aluminum Buffer Tube - Commercial Tube Diameter - Buffer Spring - T6 Aluminum Recoil Buffer - Steel Castle Nut - Steel Locking Ring - Made in the USA Not sure if you need Mil-spec or commercial buffer tube? The below image shows the difference in dimensions

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1 review
$59.99

The LBE Unlimited Mil-Spec Buffer Tube Kit for the AR15 comes with a buffer tube, castle nut, lock plate, recoil buffer and recoil spring. Get all the parts you need with the MILBUFKT.  FEATURES: Mil spec lower receiver buffer tube extension kit Aluminum construction -  Light and strong SPECIFICATIONS: Material: Aluminum Finish: Matte black Includes:  Buffer tube, castle nut, lock plate, recoil...

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Don't rely on inferior buffer tubes when assembling the collapsible stock for your AR-15 style rifle. The INTRAFUSE buffer tube from TAPCO is manufactured using impact extruded 7075 T6 aircraft aluminum with a Mil-Std 171 matte black exterior coating and a Mil-Spec dry film lubricant inside the tube that makes the action extremely quiet. Proudly made in the U.S.A.

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$49.99

The LBE Unlimited Commercial Buffer Tube Kit for the AR15 comes with a buffer tube, castle nut, lock plate, recoil buffer and recoil spring. Get all the parts you need with the CBUFKIT. FEATURES: Commercial-spec lower receiver buffer tube extension kit Aluminum construction -  Light and strong SPECIFICATIONS: Material: Aluminum Finish: Matte black Includes:  Buffer tube, castle nut, lock plate,...

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$37.85

The RSA-QD provides a forward attachment point for the Magpul MS4 Sling and other push-button QD slings. Made from corrosion resistant steel, mounts on 1913 Picatinny rail, and places the attachment point at an angle optimized for comfortable two-point sling use while maintaining easy push-button access. Made in U.S.A.

$48.85

M16 Strap Mount easily installs on all M16A2, A3, and A4 rifles. - Includes Q.D. swivel, sling plate, spacer and screw - Made in the USA.

$48.85

M16 Sling Mount easily installs on all M16A1 rifles. - Includes Q.D. swivel, sling plate, spacer and screw. - Made in the USA

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$21.45

Sling Mount Kit - Type 1 can be added to either side of the SGA™ Shotgun Stocks, MOE® Rifle Stock, or MOE® Fixed Carbine Stocks for use with push-button QD sling swivels. Heavy-duty black phosphatized steel construction easily installs with provided hardware. Swivels not included. Made in U.S.A.

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$21.45

While the ACS™ and ACS-L™ now come standard with the Sling Mount Kit - Type 3, it can be added to either the right or left side of older models for use with push-button QD sling swivels. Heavy-duty black phosphatized steel construction easily installs with provided hardware. Swivels not included. Made in U.S.A. NOTE: Many makes of push-button QD swivels...

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$12.85

The LBE Unlimited Recoil Spring for the AR15 reduces the feel of the mechanical recoil of your AR.  It is used in coordination with the buffer tube and buffer, as part of the overall recoil system.  FEATURES: Recoil Spring; Reduces the feel of the mechanical recoil of your AR SPECIFICATIONS: Weight: 0.13 lbs

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$26.35

The LBE Unlimited Recoil Buffer Tube is made from 6061 Aluminum. For your Six Position Commercial Spec Buffer Tube, get the BUF001. FEATURES: 6061 Aluminum - Light and strong Six Position Commercial Spec Buffer Tube - made for commercial spec buttstocks only SPECIFICATIONS: Material: 6061 Aluminum

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$21.85

The LBE Unlimited Recoil Buffer for the AR15 dampens the effects of recoil. Tone it down a bit with the ARBUFF. FEATURES: Recoil Buffer for the AR15 SPECIFICATIONS: Finish: Pearl Silver Weight: 3 oz

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$14.85

The LBE Unlimited ARLPLT is an AR-15 Buffer Tube Lock Plate made from 4140 Steel. It is Manganese Phosphate coated to protect it and make it last longer.   FEATURES: 4140 Steel - Strong and tough Manganese Phosphate coated - Protected to last   SPECIFICATIONS: Material: 4140 Steel Finish: Manganese Phosphate coated