BCM® M4 Upper Receiver Assembly (w/ Laser T-Markings)
Built to the correct Mil-Specs
(Inside Diameter for barrel extension slightly undersized for a tighter fit to the barrel and a more accurate rifle. Please use a heat gun or hair dryer to warm up threaded bore of receiver if barrel extension is too tight.)
Precision machined to correct Mil-Specs from 7075 T6 Forgings extension, providing the user with superior strength when dropped or when mortaring malfunction clearance drills.
Fully Assembled with forward assist, and ejection port cover
Mil-Std 1913 Rail for mounting optics and accessories
Machined for use with barrels that use an M4 barrel extension
Laser etched T-markings for addressing the remounting of optics
Includes Mil-Spec Forward Assist with heat treated tool steel pawl, with press fit and pinned cap
Hard Coat Anodized per Mil-A-8625F, Type III, Class2
Dry Film Lube on interior bore per Mil-Specs
As with all BCM® products, Made in the U.S.A.
BCM M4 UPPER RECEIVER
I recently discovered Arftac while I was looking for a place that had BCM uppers in stock. I did my due diligence and checked a couple of AR discussion forums and Reddit to see if they were legit. They got great reviews everywhere I looked and had a better price than any other vendor. So I decided to give them a try. I'm happy to say that I couldn't be more pleased with the product and the service after my first order with them. They shipped the upper for free (with tracking) the same day I ordered it. It arrived today and came in the original BCM packaging with a cool sticker as well. The upper is stout and looks flawless, just as I expected from a BCM upper. Arftac also supports the charity "Paws and Stripes" and you can round up your total price to donate to a great cause. I was happy to round up and add a little extra. If you need some parts for your next build I can definitely recommend this company with confidence. I know I'll be a return customer. Thanks Arftac!