Home CMMG How To Install a Bolt Catch Assembly on AR Rifles

How To Install a Bolt Catch Assembly on AR Rifles

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Ready to build your own AR Rifle from scratch?! Today it’s installing your AR-15 or AR-Style Bolt Catch… in under 5-Minutes! We build thousands of AR’s every year here at AT3 Tactical. We’ve picked up a trick or two for building AR’s that we’re sharing with you. Here’s to your next build!

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00:00 – Intro
00:23 – Tools Needed
01:34 – Set the Roll Pin
02:28 – Spring & Plunger
02:38 – Use Punch to Hold
02:52 – Drive Roll Pin Home
03:20 – Single Stage Trigger Install

We strive to provide the growing AR-15 shooting community with helpful, fact-driven information about the AR-15 & AR-15 style firearms and accessories to do our part in bolstering a more well-informed community and safer when handling, building or shooting their personal firearm. Let’s face it, we all have to start somewhere when it comes to becoming a firearms expert. Our goal is to help you get there one small step at a time. **The purpose and content of this video is to provide general information regarding the products and their applications on any/all related firearms that strictly comply with all federal, Minnesota state, and local laws. The viewer expressly agrees that AT3 Tactical LLC; its officers, directors, employees and agents shall not be liable for any damages or losses related to the products and information provided in this video and hereby agrees to hold the foregoing harmless from any such losses or damages. AT3 Tactical LLC is a Federal Firearms Licensee.

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16 COMMENTS

  1. 3:09 easier said than done. Many roll pins are overize (TOO big around) and the roll pin punch invariably flare the end and you have to extract the pin and start over with another, hopefully slightly smaller diameter pin.
    On my starter punch, I have ground a bevel on the edge to keep it from marring the finish inboard of the hole, where the raised part curved into the flat side of the lower.
    Really wish someone made a jig to press the pin in, similar to the jig I have to press the trigger guard pin(s) in. Same with the gas block pin.

  4. An easy way to do it is in a vise. Put the lower perpendicular to the edge with the roll pin aligned with the hole from the back so that the nub is between the jaws and crank the pin in to get it started. With the bolt catch in, you may have to wiggle and test it a bit to make sure the holes are lined up or put a punch or small allen wrench in the other end then take it out and don't force it if you meet resistance, and crank in until flush. No hammering, no risk of marring the finish or chipping, no special roll pin punch with cutaway handle. It's pinching it in and it works with the trigger guard too.

  15. I got a good video idea for you. How to adjust an A2 FSB post. I was at the range today, just got back, and I was trying to zero a fixed rear Daniel Defense sight with my A2 FSB. I assumed that UP on the FSB meant that the post would move UP if I turn it in that direction. I didn't realize that it meant the POI will move UP. I wasted about 20 rounds($10) of ammo before I figure it out.

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