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AR15.COM
7/15/2016 2:50:33 AM EDT
I have a S&W M&P AR 15/22 on order.

I know it needs an MBT, but the question is CAN I drop in a MBT?
7/15/2016 1:20:32 PM EDT
[#1]
Bueller?
7/15/2016 1:35:29 PM EDT
[#2]
I don't have a M&P 15, but it it's a standard AR lower, then it's a yes.  Hammer the old one out, hammer the new one in (after removing the safety).
7/15/2016 2:08:15 PM EDT
[#3]
Quote History
Quoted:
I don't have a M&P 15, but it it's a standard AR lower, then it's a yes.  Hammer the old one out, hammer the new one in (after removing the safety).
View Quote


Sometimes don't have to pull the safety, just grip.
7/15/2016 6:44:00 PM EDT
[#4]
The M&P 22 has a wider receiver than an AR so you will have to center the pins carefully and not just push till flush.

(I have S3G in my 22)
7/15/2016 9:43:03 PM EDT
[#5]
Are the pins slightly longer on the Armalite AR-10 "A" rifles????? Seems one old school AR-10 maker used longer pins than the DPMS clones...... Also, why couldn't you use the factory pins???