I mounted the difficulty by putting in a skinny plastic washer on the roll pin between the bolt catch and the fitting side of the receiver the place the pin goes by means of (see picture under). At a gun shop I noticed a commercially made Exatar pistol polymer lower had a similar treatment so perhaps it’s a typical downside for polymer AR 15 80 Lower Receiver Black lowers. I needed to sand the washer down till it made the bolt catch snug sufficient to engage the magazine follower however unfastened sufficient to not bind in the channel. For those who need a washer like this they can be discovered within the “Hillman” boxes at your local hardware store. They have both black and “natural” which is an off-white. The Hillman field number is 58046 “Nylon Washers” and the ones you want are 58047-A (natural) and 58055-J (black). These are the two washers in the front and again rows, furthest to the left within the photo.
Decrease receivers may be purchased and offered in three totally different levels: full, stripped or 80%. The sort you purchase will make a distinction in the legality of it, how customizable it’s and how easy it’s going to be to install on your gun – not to say the price.
Remaining thoughts:
This is a high quality decrease that is very strong and will last similar to a regular AR cast lower. The machining was harder however that is because it is a tougher material. The finish is already anodized black so no extra ending can be necessary to match a typical AR higher. This would be my first choice if I used to be choosing a 7075 cast receiver as the finish is already performed and looks great.
Legally, these frames can’t be known as GLOCK frames. However they’re 100% appropriate with GLOCK elements, and when completed and assembled, they give the impression of being and perform all the identical. Launched by Polymer80, these frames and build kits require some fundamental reducing and drilling, too. Since they’re product of polymer, they’re incredibly simple to finish.
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