Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

Complete, semi-auto M4-type lower receiver with trigger group A2 pistol grips and collapsible stock is ready to accept the upper that meets your exact needs. A supplier to the U.S. military since WWII, High Standard’s name means top-quality materials and workmanship throughout. All parts are manufactured in the U.S. to original Colt specs, and each part is gauge-checked for correct tolerances in accordance with MIL-STD 105D during assembly. Receiver is forged from 7075 T6 aluminum alloy, which has nearly twice the tensile strength of the standard 6061 alloy, then hardcoat anodized for even greater strength. The steel trigger/hammer group’s precision-ground engagement surfaces provide a crisp, near-match-grade trigger pull. M4-style, 6-position collapsible buttstock includes buffer tube, buffer, recoil sring, receiver lock plate, lock nut, and rear sling swivel. Lower Receiver w/o Buttstock includes lower receiver assembly with trigger group and pistol grip fully assembled for those who wish to install their own buttstock. Also includes buffer detent, buffer detent spring, takedown pin, takedown detent, and detent spring.


AR-15, Issue:10, Page:007
Big Book Catalog, Issue:67, Page:007
Law Enforcement / Police Store, Issue:08, Page:002
New Product Supplement, Issue:582, Page:002

SPECS: Receiver – Forged 7075 T6 aluminum, hardcoat anodized, matte black. Buttstock/Pistol Grip – High-impact polymer, black. FFL required for purchase.

HSA-15-M4 CARBINE LOWER RECEIVER ASSBL
100-002-328WB
HSA-15 Lower Receiver w/Buttstock
100002328HSA-15 Lower Receiver w/Buttstock

Mfr Part: HSFALHM4

$259.99

In Stock

Cartridge: 223 Remington, 5.56 mm NATO

Finish: Matte Black

Style: Complete

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AR-15 COMPLETE M4 LOWER RECEIVER