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Ar-15/m16 Buffer Tubes Double Star.
For M4-Style Buttstocks; Gives 6-Position Adjustment
Machined aluminum receiver extension tubes accept an M4-style adjustable carbine buttstock. Six precision-machined notches on the underside provide plenty of options for setting length-of-pull. Perfect for a custom build, installing a mil-spec or commercial stock on a civilian carbine, or updating a fixed-stock rifle with an adjustable M4 stock. Machined from a lightweight aluminum extrusion then hardcoat anodized, and dry film lube-coated inside for smooth movement of the buffer and buffer spring. Requires carbine recoil spring and buffer, lock ring, and receiver plate, all available separately.
AR-15, Issue:11, Page:047
Big Book Catalog, Issue:71, Page:051
SPECS: Aluminum, hardcoat anodized, matte black. 7-7⁄8" (20cm) long. Mil-spec – 7-3/16” (18.25cm) long, 1.145" O.D. Commercial – 7-7⁄8" (20cm) long, 1.167 O.D.
Ar-15 Billet Titanium Castle Nut Brownells.
Lightweight titanium castle nut features precision machined titanium surfaces. Non-sharp edges ensure proper threading. Weighs only 0.3oz.
Ar-15 Qd Endplate Titanium V Seven Weapon Systems.
- Grade 5 Titanium
- Dark, Raw Titanium Finish Or Ionbond Black
- Approx. 50% Lighter Than A Steel Mil-Spec Receiver Endplate
- Lifetime Warranty
- Made In The United States Of America
- Weighs 7.2 Grams
Big Book Catalog, Issue:71, Page:077
Ar-15 9mm Receiver Extension Assembly Fm Products Inc.
Everything To Make Your Pistol-Caliber AR Ready for an Adjustable Stock
The FM Products 9mm Receiver Extension Assembly is a complete, one-stop package with everything you need to lay the foundation to install an adjustable, M4-type carbine stock on your 9mm-chambered AR-15. It includes the extension (buffer tube) itself, made from an extremely strong yet lightweight 7075 T6 aluminum extrusion.
The FM Products 9mm Receiver Extension is hardcoat anodized to resist surface wear, before application of a dry film lube coating that aids in smooth movement of the buffer inside and the stock outside.
- Mil-spec (1.14" O.D.) buffer tube accepts M4-type adjustable carbine stocks
- 6 notches for setting stock position
- Correct-weight (6.5 oz.), extra-long buffer - no spacers required
- Stainless steel music wire recoil spring helps ensures reliable cycling with all loads
The core of the FM Products 9mm Receiver Extension Assembly is the Foxtrot Mike 9mm Heavy Buffer of the correct weight and size to properly cycle blowback operated 9mm AR-15s with minimal bolt bounce. It’s made of pre-hardened 8620H carbon steel that’s "H" rated to ensure harder core hardness than standard 8620 steel.
Big Book Catalog, Issue:71, Page:045
Ar-15 Ratchet Castle Nut Qd End Plate Set Primary Weapons.
The Primary Weapons Systems Ratchet Lock Castle Nut End Plate set works with mil-spec or commercial buffer tubes and is an alternative to staking. A quick upgrade to any rifle build, the Ratchet Lock Castle Nut End Plate features a QD mount and easy installation with any buffer tube.
Ar-15 Billet Titanium Qd Endplate Brownells.
Lightweight titanium QD endplate weights 50% less than steel. Accepts standard QD sling swivels.
Ar-308 Commercial Carbine Buffer Assembly Luth-Ar Llc.
Luth-AR factory replacement Commercial 308 Carbine Buffer Assembly. Fits standard AR-15 rifles.
Big Book Catalog, Issue:71, Page:045