G20 mag ext
In my g20 gen4 10mm putting +5 flared and slightly deformed the right angle edge of the plastic factory mag sleeve, the part that keeps the mag in the gun, after just 4 insertions. Thats the only edge at all that keeps the mag in the gun. Makes me believe w repeated use the mag will start to fall out as that edge gets rounded down. Not what we want to happen. 5 'will fit' but id say 'should not'. The tension is too great, the mag must be jammed in harder than normal to get it to seat so it puts a lot of pressure on that plastic squared edge, that isnt that deep either. I would not recommend +5, u need some give on the top round so it can depress slightly against inside metal parts (i dont know the proper term) when inserted, and +5 makes it rock hard. +4 is fine. Ill say it def should be called a plus 4, then id give 5 stars rather than 4. I will use it as a plus 4 for that reason unless the spring softens over time, then i will update this, but a good spring shouldnt for years. Also the hex screw isnt a standard size. Bigger than 2mm, smaller than 2.5mm. Bigger than 5/64, smaller than 3/32. So any size hex wrench isnt snug in the hole causing it to strip easily. I added a drop of threadlock just so i dont have to recheck the tightness, thatd be a great place for a lockwasher rather than a flat washer btw. The aluminum is light, high quality, strong, and the parts all fit great and snug. Im confident it wont pop off or break off if dropped. . The spring and follower are outstanding as well. Kinda unsure if im happy with it only because I really wanted a plus 5 not a plus 4. But it is certainly high quality, and the fitment is great, and snug, and that matters. And it does look cool as well.