STRIKE INDUSTRIES - AR Enhanced Lower Receiver Parts Kit With Trigger

Great oversized pins!

I've purchased this same kit for several builds as I like to add my own drop in Trigger. All parts in this kit are high quality and function as they should.

Been building AR rifles for 20+ years for SO and LE as well as standard military. This hack smith that said he has been doing this since 1979 has no clue what he is talking about. Older AR lowers were all over the place and really out of spec with their final finish Parkerizing. I suspect this guy used an older lower. I have used this LPK in every modern lower(made within the last 8 years) from Anderson to Xanthos and not once had any problems. This by far is the best LPK ever made. The safety, mag and bolt catch are all upgraded and amazingly styled and the detents are 1 sided and well though out! Please dont waste your money on the other junk LPKs out there. You will love this kit!

Skip the trigger if you get this kit, trigger was pretty much trash and no better than generic mil-spec trigger. The larger take-down pin heads are a nice touch, and the 60deg safety throw is amazing. Like others mentioned, the ambi selector switches were quite sharp but nothing a little bit of gritty sand paper couldn't fix. The one area I did have issues with was my mag catch. During a recent rifle shoot, I was running it hard and during mag reloads with the bolt locked back, I kept finding that the new mags would over insert and get jammed preventing me from releasing bolt catch. At first I thought it was due to my gen2 PMAGS. But upon further inspection after taking it apart at home, I noticed the mag catch has an overly aggressive chamfer which would slide over recessed slot stop in the PMAGs for mag catch. I swapped the SI mag catch for a generic mil spec one (with very minor chamfer) on another lower I had and for the most part it stopped the over insertion problem. Looking at the SI photos, it doesn't appear that the chamfer is supposed to be this pronounced so perhaps I got a defective one.

I have been building ar rifles since 1979 and this is the most aggravating lower parts kit I have ever installed . Nothing fits with out some adjustment , the safety is horrible and pretty cheesy . I will not be using this product ever again . The pins for the trigger and hammer would not fit through the hammer and trigger . I had some spare ones I used . don't wast your money you can get better results using comma parts and jp springs .