Product Description

Convenient kit contains all the components needed to mount the buttstock of your choice on an AR-15 rifle or carbine. Perfect for stock conversions such as altering a rifle to accept a collapsible carbine stock. All parts are manufactured from the highest quality materials and held to strict dimensional tolerances for proper fit and function. Commercial carbine kit comes with 1.17" O.D., six-position receiver extension for use with commercial or “universal” buttstocks. Mil-Spec kit has a 1.14" O.D., five-position receiver extension for correct fit of military M4 carbine buttstocks. M4 buttstocks and clones will not fit Commercial tubes.

SPECS: Receiver Extension & A2 Stock Spacer – Aluminum, anodized, matte black. Recoil Buffer – Aluminum and steel. Spring, Lock Ring, Receiver Plate – Steel. Kits fit standard, mil-spec AR-15/M16/M4 lower receiver and clones. Installation instructions included.

Product Description

FITS: M4 Post Ban 16" - RFA2-M4PMC, .223

Product Description

Features:

• Six position AR-15/M16/M4 receiver extension assembly
• Includes Mil-Spec receiver extension/buffer tube, receiver lock plate, lock-nut/castle nut, carbine buffer and carbine buffer spring
• Buffer tube is Mil-Spec diameter and 6061 aluminum
• Carbine buffer weight is 3 oz
• Buffer spring is 17-7 stainless steel

Fits standard AR-15/M16 lower receivers. Mil-spec diameter. Includes buffer tube, lock plate, castle nut, buffer and buffer spring.

Product Description

Impact extruded from 7075, the PWS EBT is optimized for strength and rigidity while creating a solid platform for the new lightened design. Anodized in Mil spec type 3 to exceed standards in hardness and corrosion protection.

The new Ratchet-Lock Design eliminates the need for staking the castle nut and gives a rock solid lock up while being able to remove it easily if needed in the future.

Additional lightening cuts reducing weight in conjunction with the new attachment design net nearly a 1oz weight reduction from already efficient mil spec buffer tube design.

The anti-tilt lip enhances function and reliability, giving
longer life to piston driven weapons by allowing the carrier to start in the buffer tube rather than transitioning into the tube on extraction.

Product Description

Mil-Spec Hardware for Your AR Build

The Brownells AR-15 Rifle Length Buffer Tube Kit is made from Mil-Spec 7075 aluminum and features a matte black hardcoat anodized finish.

This kit includes a buffer and spring designed to fit standard AR-15 and M16 lower receivers and rifle length buttstocks.  

• Machined from 7075 aluminum
• Matte black hardcoat anodized
• 9 5/8” length
• 1.110” diameter

The Brownells Rifle Length Buffer Tube Kit provides Mil-Spec hardware for your AR.

Product Description

All-In-One, Mounting Hardware Kit For Adjustable Buttstock

Compatible with Mil-Spec stocks, this kit contains all the necessary parts to mount a stock assembly onto your lower receiver. Six position buffer tube is machined from 7075 T6 aluminum to Mil-Spec dimensions with a Type III hardcoat anodized finish. Machined, high carbon steel castle nut is heat treated for extra strength and given a phosphate finish for durability. Kit also contains a standard 3 oz. carbine buffer and a carbine action spring made of high-tensile steel.

SPECS: Buffer Tube - 7075-T6 aluminum, hard coat anodized Type III finish. Carbine Buffer - 3 oz. (85g) wt. Castle Nut - Steel. Carbine Spring - High-tensile steel.

Product Description

For Secure Installation Of Almost Any Rifle Buttstock

Convenient kit contains all the components needed to mount the buttstock of your choice on an AR-15 rifle or carbine. Perfect for stock conversions such as altering a rifle to accept a collapsible carbine stock. All parts are manufactured from the highest quality materials and held to strict dimensional tolerances for proper fit and function. Kits available for the four standard buttstock types. A1 rifle kit contains receiver extension tube, recoil buffer, recoil buffer spring, and buttstock cap screw.

SPECS: Receiver Extension & A2 Stock Spacer – Aluminum, anodized, matte black. Recoil Buffer – Aluminum and steel. Spring, Lock Ring, Receiver Plate – Steel. Kits fit standard, mil-spec AR-15/M16/M4 lower receiver and clones. Installation instructions included.

Product Description

For Secure Installation Of Almost Any Rifle Buttstock

Convenient kit contains all the components needed to mount the buttstock of your choice on an AR-15 rifle. Perfect for stock conversions such as altering a rifle to accept a fixed rifle stock. All parts are manufactured from the highest quality materials and held to strict dimensional tolerances for proper fit and function. A2 rifle kit adds to A1 kit contents the correct buttstock spacer required for A2 rifle stocks.

SPECS: Receiver Extension & A2 Stock Spacer – Aluminum, anodized, matte black. Recoil Buffer – Aluminum and steel. Spring, Lock Ring, Receiver Plate – Steel. Kits fit standard, mil-spec AR-15/M16/M4 lower receiver and clones. Installation instructions included.

Product Description

Provides Six-Position Adjustment

M4-style receiver extension tube has six precision-machined notches on the underside for maximum flexibility in setting length-of-pull with adjustable buttstocks. Lets you install a mil-spec stock on a civilian carbine or refit a rifle with an A2-style fixed buttstock with an adjustable M4 stock. Outside diameter of tube is machined approximately .003" oversized for snug, rattle-free fit of stocks designed for mil-spec extensions. Lightly sand interior of stock to get just the right combination of snugness and freedom over movement. Machined from a lightweight aluminum extrusion before hardcoat anodizing with a wear-resistant matte black finish. Rifle conversion also requires a carbine action spring and buffer, available separately.

SPECS: Aluminum, hardcoat anodized, matte black. 7¼” (18.2cm) long, Mil-spec 1.145" to 1.150”  O.D.

Product Description

Maintains Proper Alignment Of Stock & Buffer Tube

M4-style receiver plate includes the engagement tab required to align the buttstock and buffer tube with the lower receiver on carbine models. Precision, fineblanking process ensures precise edges and superior flatness for correct fit and solid installation.

SPECS: Steel, black oxide finish.