BCM Blem Upper Receiver 13.7" 5.56 NATO Mid-Length 1:7 Twist Government Profile with Breek Arms RGS-2 Rail

Unleash the Power of Precision with Our 100% American Made Upper!

100% Made in the USA!

Get ready to dominate the range with our top-tier Blem Upper, minus the BCG and charging handle. This isn’t just any upper, it’s a finely tuned machine built for performance and reliability. Here’s what makes it a must have:

• BCM M4 blem upper
• BKF 13.7" mid-length gas 1/7 twist barrel
• BKF gas tube and block
• Breek Arms 13.7" MLOK Handguard
• Breek Arms 3 prong flash hider and Castle Blast Shield

Why You’ll Love It:

• Length: 13.7"
• Caliber: 5.56 NATO
• Gas System: Mid-length
• Twist Rate: 1:7 RH
• Gas Block Journal: .750"
• Gas Port Size: .076"
• Muzzle Thread: 1/2-28
• Material: 4150 Chrome Moly Vanadium (CMV)
• Finish: Black nitride+™ by H&M
• Profile: Government
• Barrel Extension: M4
• 11° Target Crown

Ready for Action:

Just add a charging handle and a BCG, and you’re ready to attach this powerhouse to your lower and hit the range! Whether you’re a seasoned pro or a weekend warrior, this upper is designed to deliver unmatched performance and reliability.

Important Note:

These items are not factory built BCM uppers.  They are meticulously assembled by our in-house armorer using the most reliable parts we can find and use ourselves.

We do not accept returns on used, blemished (purchased as blem), or custom engraved/laser etched items. 

All NFA/ATF rules apply. You may use this barrel with a lower receiver that is a Registered SBR, Machine Gun, or Pistol. Possession of this barrel along with a Non-NFA lower receiver is prohibited, except when permanently attaching a muzzle device extending the length to 16 inches.