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Achieve an exceptionally tight handling footprint while maintaining hassle-free federal compliance. The PRO2A 14.5" 5.56 NATO Mid Length Upper Kit with Flash Can features an extended slimline flash can permanently pinned and welded down to the barrel threads, successfully stretching the physical muzzle measurement past the legal 16-inch mark without NFA tax stamps or administrative delays. Operating on a tuned mid-length direct impingement setup, this configuration dramatically drops gas port velocity to deliver remarkably smooth, flat-shooting dynamics. The recessed flash can directs all explosive noise and acoustic blast waves straight downrange away from your ears, while the extended 15-inch free-float rail wraps cleanly around the assembly for a continuous gripping profile. Arriving with a complete lower components group and an adjustable rifle buttstock, this turn-key package upgrades your standard stripped lower receiver into an elite, non-braced defensive carbine.
| Upper Receiver | Milspec Forged 7075-T6 Aluminum, M4 Feed Ramps, Forward Assist & Dust Cover, Type III Hardcoat Anodized Black |
|---|---|
| Charging Handle | Standard Mil-Spec Charging Handle |
| Bolt Carrier Group | Milspec M16 Full Auto Profile, 5.56 NATO Caliber, QPQ Nitride/Melonite Treated, MPI Tested, 8620 Carrier with 9310 Steel Bolt |
| Barrel Length & Profile | 14.5-Inch Medium Profile (Brings overall length to 16.1 Inches via Pin & Weld) |
| Caliber | 5.56 NATO (Safely accepts both 5.56x45mm NATO and .223 Remington factory ammunition) |
| Twist Rate | 1:7 Twist Rate (Highly optimized for stabilizing standard 62gr to heavy 77gr match ammunition) |
| Barrel Material | 4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish |
| Gas System | Mid Length Direct Impingement with Low-Profile Gas Block |
| Handguard | 15-Inch Free Float Slim Profile M-LOK Handguard Rail System |
| Muzzle Device | Extended Slimline Flash Can, 1/2x28 TPI, Permanently Pinned and Welded for Legal Compliance |
| Lower Parts Kit | Complete AR-15 Lower Parts Kit (LPK) including Pivot/Takedown Pins, Bolt Catch, Magazine Catch, Springs, Detents, Standard Pistol Grip, and Mil-Spec Fire Control Group (Trigger & Hammer Assembly) |
| Stock Assembly | M4 Carbine Adjustable Buttstock, 6-Position Mil-Spec Buffer Tube (Receiver Extension), Carbine Recoil Buffer, and Spring |
The 14.5-inch pinned and welded layout remains the premier option for shooters demanding maximum maneuverability on a defensive carbine without accepting the legal limitations of a pistol brace or short-barreled rifle classification. By matching this compact profile with a blast-directing flash can tucked inside a full 15-inch rail, Pro2A Tactical removes the structural confusion from custom builds, ensuring operators can step up to premium performance safely and comfortably.
| SKU | P2A556AX15CAR145CAN-TK-PW-KIT |
|---|---|
| Barrel Length | 14.5 inch |
| Rifle Caliber | 5.56 NATO |
| Manufacturer | Pro2A Tactical |