The Smith & Wesson M&P15-22 is one of my favorite guns to shoot. I have a few thousand rounds through mine and it continues to perform extremely well. Is it 100% reliable? No – but I know of no rimfire that is. I’ll tell you what – it is extremely close – maybe 99.8%. The factory capacity magazine hold 25 .22LR rounds and much like the rifle has an appearance that lends itself much to the AR/M4 appearance.
Like any other red-blooded American male (and quite a few females out there) – higher capacity is welcomed when it comes to firearms. Looking around at my local Academy Sports store I saw the ProMag S&W M&P15-22 32 round magazine.
I have never had any ProMag products before as from what I have read online their reputation is not the best. Looking at the magazine in the store it looked to be of good quality and build. In fact – it looked to be a VERY close clone of the factory magazine other than being a bit longer. At a price for $14.99 – I couldn’t pass it up and bought one.
Over Thanksgiving I spent some time at my bug out location in Georgia and was able to test the ProMag magazine. As stated already – placing the factory magazine and the ProMag next to each other they look very similar. I actually mentioned to my brother that I would not be surprised if they were made in the same factory on the same equipment with minor cosmetic changes. Likely they are not – but the point is they are very similar.
Fit and Feel
The ProMag M&P15-22 32 round magazine looks to be well made. I work in a polymer manufacturing facility – and reviewing the magazine for any molding issues – it looked very good. Lines are clean, seams are tight – no issues. Inserting the magazine into my M&P15-22 it fit securely with no excess wiggle or wobble. Again, very similar to the factory magazine.
Purpose & Reliability
The obvious purpose of any magazine is to supply ammunition to the firing mechanism. The ProMag 32 rounder does just that at a capacity that is 7 rounds of .22LR higher than the standard factory magazine. This should be done with durably and reliably.
I loaded and shot right around 300 rounds through the single ProMag 32-round magazine I bought. Reliability was excellent. The only issues I had occurred on the very first, initial 32 rounds. In fact – I had 3 failures for the bolt to move forward on the first 6 shots fired. After that – flawless. I believe that the cause of those failures involved the magazine lips slightly rubbing up against the bolt on initial shots, thus slowing the bolt down. After just a few shots the feed lips were “broken in” and there were no more issues.
I am very pleased with the ProMag’s performance. Shooting the M&P15-22 with the 32 round magazine felt no different than the standard 25 round factory magazine. Yes – it is longer but the feel of the gun really changed little. Obviously shooting prone, walking through brush, navigating any type of tight spaces could prove a bit troublesome with the longer magazine. What I have found thus far – at least with this single example – is a cheaper alternative to the standard factory magazine at a higher capacity.
At a cost of $14.99 – I went ahead and purchased another to go with my 6 factory magazines. If you cannot find one at your local sporting goods store or gun shop – MidwayUSA.com has them and currently on sale for $12.99.