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This is BCM's complete lower receiver assembly built with mil-spec precision and ready to pair with any standard mil-spec upper receiver. The receiver is forged from 7075-T6 aluminum and finished with hardcoat anodizing per military standards, giving you a durable foundation that'll hold up through real-world use. Everything comes installed and tested, so you get a complete lower that requires no assembly.
You're getting BCM's full suite of upgrades with this lower. The polished nickel teflon trigger has a smooth break and minimal creep that users consistently praise as being excellent for a mil-spec trigger. The enhanced trigger guard gives your finger room when wearing gloves, and the QD sling mount endplate is already installed. A staked M4 lock nut secures the receiver extension so it won't loosen under sustained fire.
The Mod-2 SOPMOD is where BCM really upgraded the ergonomics. It's a widebody design that gives you a wider, more comfortable cheek weld when shouldering the rifle. The semi-clubfoot profile works whether you're shooting prone with a bipod or running tactical drills. It locks up tight with zero wobble, features ambidextrous QD rotation-limited mounting, and includes BCM's VBOST sling retention tab for vehicle operations or folded sling setups. The removable buttpad lets you swap between a rubberized surface for traditional shooting or a textured non-slip pad for high-ready manipulation.
You're getting the BCM Mod 4 pistol grip, a carbine H buffer (one tungsten weight plus two steel), and the low-shelf internal geometry that works with RDIAS or Accuwedge devices if you want a tighter upper-to-lower fit. The lower is multi-caliber compatible and marked for safe and semi fire. Everything BCM includes on this lower is made in the USA and backed by their reputation for durability and reliability.
This lower works with any mil-spec AR-15 complete upper receiver. BCM built it to standard mil-spec tolerances, so it'll pair with uppers from any reputable manufacturer. Just make sure your upper is also mil-spec for proper fit.
Yes, the widebody design gives you a noticeably better cheek weld for optic alignment and comfort. The enhanced locking system has zero wobble, and BCM's internal latch keeps it rock-solid. Users consistently prefer it over basic M4 stocks because it feels more refined and handles better during shooting.
Yes, everything is fully assembled and ready to use right out of the box. The stock is mounted on the receiver extension, the trigger and safety are installed, and the buffer assembly is complete. You just need to mate it with a complete upper receiver.
The main difference is the Mod-2 SOPMOD stock, which has a wider body and better cheek weld than BCM's basic stocks. This lower also features the carbine H buffer system for standard carbine-length operation, while some of BCM's other options use intermediate-length systems.
Yes, BCM includes a removable buttpad that you can swap between a rubberized pad for traditional shooting or a textured non-slip surface for high-ready weapon handling. It's a simple change that lets you customize the stock to your shooting style.
It's completely pre-assembled. All the trigger components are installed and properly staked, the stock is mounted, and the buffer system is in place. BCM handles all the assembly and quality control, so you get a finished product ready to pair with an upper.
| UPC | 812526023926 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | LRG-STK-MOD-2-SPMD-BLK |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Color | Black |
| Length | 17.5000 |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| Style | Complete |
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