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The BCM Lower Receiver Group with Mod 0 Stock is a semi-complete lower assembly built on the reputation BCM has earned across decades of military and law enforcement use. This isn't stripped aluminum and a trigger group. It arrives fully assembled with components designed to function together as a system. You get the receiver forged from 7075-T6 aluminum, hardcoat anodized to military specification, and pre-installed with all the furniture and controls you need to complete a build.
The BCM Gunfighter Mod 0 stock is a lightweight synthetic design that handles quick adjustments without the rattle or slop some less expensive stocks develop. The reduced-angle Mod 3 pistol grip feels modern in your hand during normal shooting positions. The PNT trigger uses polished nickel teflon coating to deliver a smooth, predictable break that rivals triggers costing significantly more. The enhanced trigger guard gives you room to work with gloved hands. Add the QD sling end plate and you've got three mounting points for your sling setup right out of the box.
This lower requires a lower parts kit to finish. That's not a drawback, it's flexibility. You choose the exact fire control components and springs you want for your build. The receiver is marked for SAFE and SEMI operation. The staked M4 lock nut is done properly at the factory, and the low shelf accommodates both RDIAS installations and Accuwedge shims for a tight fit. The carbine buffer tube accepts standard USGI H buffers, and BCM includes the tungsten and steel weights.
BCM's quality control philosophy shows in the details. Everything here is made in the USA. The finish is durable. The tolerances are tight. Customer feedback consistently mentions that these lowers fit and function reliably on a variety of uppers without the wobble or fitment issues that plague cheaper receivers.
It's a semi-complete lower, meaning it's fully assembled but requires a lower parts kit to function. You'll need to add your own springs, detents, takedown pins, and other internal parts. BCM makes compatible enhanced lower parts kits if you want parts from the same manufacturer.
The PNT trigger components are precision-ground and hand-polished, then coated in polished nickel teflon for smoother operation and corrosion resistance. This coating reduces friction on the sear surfaces for a cleaner break while maintaining mil-spec reliability and longevity.
Yes, it's mil-spec compatible with any standard AR-15 upper receiver. BCM lowers are known for tight tolerances and good fitment, but you can tighten any minor upper-to-lower wobble with an Accuwedge or similar shim, which the low shelf is designed to accommodate.
The stock itself has two QD attachment points, and the end plate adds another QD mount, giving you three total sling mounting options. You can run single-point, two-point, or quick-detach sling configurations right away.
Yes, it's marked as multi-caliber and works with .223 REM/5.56 NATO platforms. The designation reflects how it functions across both cartridge specifications, though you'll need an appropriately chambered upper receiver for whichever cartridge you want to fire.
The Mod 0 stock mounts to standard mil-spec receiver extensions, and the Mod 3 grip is standard AR attachment. Both can be replaced with any mil-spec compatible aftermarket stock or grip. The modular design means you can configure the lower exactly how you want it.
| UPC | 812526020369 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | LRGSTKMOD0BLK |
| Action | |
| Caliber/Gauge | Multi-Caliber |
| Color | Black |
| Length | 17.8000 |
| Model | |
| Product Type | Semi-Complete |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| Style | Complete |
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