Reviews & Ratings for Sylvan Arms AR-15 f/9mm Glock Conversion Block — 20 reviews — Page 1

I'm very picky in what I like and want. I haven't found a PCC lower that is exactly what I want so I got this to try in my favorite AR lower. Well, I'm liking it more than I thought I would to the point I regret buying a few of my PCC lowers. It works in 6 different lowers with 3 different uppers on each. Spikes, BCA, Radical, CMMG, Wilson and a old Pro Ordnance Carbon-15 lower. Uppers were one CMMG and two hodge podge builds with parts I can't even remember. I tried every mag I have and I'm cheap so I have all of them lmao. Not a single malfunction in any combination. My spikes PCC lower prefers ets mags. This thing is loose and floats a little, I think actually improving reliability. It's only loose vertically. I could put an approximate 0.010" washer under the screw and make it rigid but I'm not sure it would help or hurt. I prefer this mag catch style in a PCC. I got it on sale so the price was in what I was willing to pay. Tbh, at list I would not buy it but for the sale price I'll probably grab a couple more.

Havnt run any rounds yet but it seems Tobe good to go

Looks and feels good. Fits and functions perfectly. Fast shipping with a good price. Recommend this to anyone that needs to convert to 9mm.

Gave it 2 stars as the fit and finish were good to go. Putting mags in took wiggling them around to lock in. Once “locked” in, you could pull the mags out easily. When the mags pulled out it tore up the polymer mag catch on a Glock and Magpul magazine. Called Sylvan Arms help line and no one would answer. Called Optics Planet and they took care of me via return.

Great price and recommended by name to use with the foxtrot Mike uppers.

Works exactly as promised. I would purchase again.

This was great for my ar-15 9mm build i tried other brands they didn't work but this ran flawless �

This block slides easily into my IWI lower, fits snugly, and locks in place firmly with my mil-spec magazine catch. I may not even need to use the retaining screw. It comes with it's own Allen wrench, so you have something to store in your pistol grip. No alterations to anything were required. All of my SGM Tactical and Pmags slide into it easily, lock up tightly, and fall out freely when released. I couldn't be happier with this 9mm Conversion Block, and I recommend it with no reservations.

This thing is great. Went in tight . I used a mallet to get it in it will not jut drop dree , and that's what I wanted. The Glock mags don't drop right out either. But that's ok.

This works as it is supposed to. However, the "screw" holding the ejector is in a hole with no threads , so, it's a pin, held in by the magwell wall.rhw thing was so tight I had to beat it into place on my Anderson lower. But it works? It's nice looking. Well made, except for this pin/screw.