Just an FYI…John is guaging interest in his barreled uppers on Instagram. He uses the CMMG bolt but machines the breech in a manner that eliminates the collar. I have one and love it.
Whether you're a greenhorn or a seasoned veteran, your collection's next piece is at Bass Pro Shops. Shop Now.
Erik-- I thought about one of those barrels (from Keystone) as well. That looks like some really nice machine work on the breech. Question: What, if anything, secures the CMMG "rails" to that breech? Or, when assembling the rifle do you have to juggle things (keep forward "hand" pressure on the bolt/rail assy) as you close the lower on the upper receiver?I actually do not have any pictures of the entire rifle but here are a couple pictures of the barrel and barrel breech. Compass Lake Engineering and Keystone Accuracy do the same thing; they machine the breech face to accept the bolt without a collar. CLE uses an M261 bolt and KA uses the CMMG Bolt.
I was very close to choosing a CLE barrel/Bolt combo but I figured since I already had a couple CMMG bolts, a handful of magazines, a CMMG Bob Sled, redi-mag adapters, and S&W magazines that it made more sense to go that route. Yes, I sent him my parts (CMMG bolt, upper receiver, handguard w/barrel nut, and charging handle) but I preferred it that way because I could get the parts I wanted and it kept the overall cost down a bit. I called him and we discussed the barrel contour I wanted and I sent him my parts. A couple weeks later I received the complete assembled upper. It was quite painless.
That's really nice work Triggershoe! My brother and I have been discussing doing the same thing with an Anschutz blank we got from Numrich. Are you happy with the way it shoots? Any issues?
To answer your question, there is nothing to capture the bolt from shooting off the end of the rails if you remove it from the receiver. However, you can break open the upper without the bolt shooting out the end. This is accomplished by a little screw in the side of the receiver that engages an existing notch in the side of the rail. I remove the screw while shooting then insert it when I want to open it up.