BoilerUp
7 May 2017, 09:00
Any experience building on a stripped BCM upper? I picked up a blem a year or so ago and finally got a barrel for it. The barrel extension won't fit in the receiver, which is apparently by design:
(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.)
Source: https://www.bravocompanyusa.com/BCM-Upper-Receiver-Assembly-M4-Flat-Top-demo-p/flat%20top%20-upper%20-m4%20demo.htm
That means my lapping tool won't fit either and I'm a bit concerned that removing the barrel would be quite a pain (and BCM uppers have that reputation). I know that, eventually, I'll likely want to change out the barrel, so I'm trying to decide if I'll regret proceeding with this upper or if I should just pick up an Aero for $50.
(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.)
Source: https://www.bravocompanyusa.com/BCM-Upper-Receiver-Assembly-M4-Flat-Top-demo-p/flat%20top%20-upper%20-m4%20demo.htm
That means my lapping tool won't fit either and I'm a bit concerned that removing the barrel would be quite a pain (and BCM uppers have that reputation). I know that, eventually, I'll likely want to change out the barrel, so I'm trying to decide if I'll regret proceeding with this upper or if I should just pick up an Aero for $50.