PSA Lower Build Kit Assembly
109,059
Published 2023-04-15
All Comments (21)
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Appreciate you making this video for us newbies that haven’t done this yet.
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Next time, if you want to prevent scraping and scratching up the lower while installing the bolt catch roll pin, cover the area to the rear of it with painter's tape. In addition, I use a round toothpick with the sharp tip cut off as a "slave pin" to hold the bolt catch in place as I drive in the roll pin . . . which drives the toothpick out the other side as the roll pin displaces it. Eliminates the need for three hands.
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Use Knipex pliers for the bolt catch pin and the trigger guard. Wrap the jaws with tape first.
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Great no BS build video Sir. Bare bones with no special tools other than the armorers wrench. I am a First time builder with No experience with AR's what so ever and it only took me an hour to do this build and I couldn't be happier. FYI: I used a shish kabob skewer to push threw to hold the detents in place instead of a punch and it was a perfect fit. Thanks again 👍
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Just a couple of tips. When installing the bolt catch, put the spring in first and then the little tip. The tip should be touching the bolt catch lever, not the spring. Also, use some sort of slave pin (small punch or allen wrench) to hold the bolt catch lever while tapping in the roll pin. As you tap in the roll pin it will push out the slave pin. I always use some wide painter's tape along the side of the receiver to prevent marring while driving the roll pin in.
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Looks like that hammer spring was getting you all frustrated 😂😂😂
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Very good camera angle! Thanks for the tutorial!
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Great video. Will definitely help people understand how to put these together. The hammer spring looked to be incorrect though. The legs of the spring when pointing down should be on the flat side of the hammer and the hoop part of the spring should be resting against the hooked side of the hammer.
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Thank you for sharing this video! I was able to complete my build after watching your tutorial.
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I have this exact setup, good vid, nice.
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Great video. My lower just arrived
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Assembling the hammer spring, you showed it one way on the outside of the sickle shape, but when you put it into the receiver it was on the opposite end and inside hammer. I’m confused and stuck
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Thanks for making this! Subscribed.
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I missed seeing exactly how you got that roll pin in on that bolt catch there🤔 I usually get the pin started first using my roll pin starter punch, drop in my bolt catch assembly then finish driving the pin on with a flat punch. Investing in the proper tools goes a long way when assembling anything.
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Awesome video, straight to the point and informative. Got a sub from me. keep it up!
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Very good video. It is a big help for doing it the first time.
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You point out that there is a large end of the spring when assembling the trigger parts but never show or say which end goes in first. Please add this in comments.
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Instead of hammering the pin I used pliers to squeeze it in
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I found it was easier to pound the rollpin in to the first part, aligning it with your fingers until its stable/hammered in just before the space for the bolt catch, and then put the bolt catch and finish hammering.
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Really great kit! So far my trigger guard roll pin and my bolt catch roll pin are too large for the holes. It’s a Ruger lower so it’s not a cheap no-name lower. What crap!
