Quoted:
You will probably be OK. What you would NOT want to do, is use a barrel extension WITHOUT the cuts in a receiver WITH the cuts. This leaves a lip where the two meet that CAN cause a feeding malfunction.
|
No. There is no disadvantage to using an M4 cut receiver with a standard rifle extension, you just won't get the benefit of the M4 cuts, it will be just as reliable as a standard receiver with a standard extension. Adding the M4 cuts cannot lower reliability. Let's say the rounds are feeding low and you didn't have the M4 cuts, they would just slam into the receiver = jam. A properly functioning rifle never puts those rounds anywhere but straight into the barrel extension.
|
Umm, negative.
I should know, I have an M&A Parts M4 upper assembly that has an A2 upper (has the cuts in the reciever) and they put a 16" M4 barrel in it that had a rifle barrel extension. I will admit that it went 1800rds, or so, without giving me much trouble, but it turned into a jamm-o-matic one day while shooting. I got to looking at it, noticed what the morons did wrong, whipped out the dremel and blend the barrel extension into the reciever feed ramps, and VIOLA! instant reliability.
Some people might not have any problems, but an M4-ramp reciever and a rifle barrel extension is NOT a good thing.
WIZZO