SL-308 PSA LPK Fit Issues

marriedwchildren256

Some fitment issue with the PSA PA10 LPK that I'm running into. The bolt catch is too long. There's no way the pin is going to get in there.

The front pivot pin seems too short. It fits but definitely leaves a lot of space. Is there a standard length for the pivot pin?

The takedown had too big of a diameter which I corrected with a Dremel on the lower and the detent is in the wrong place as you can see from the rub marks on the pin. But looking at the KAK takedown pin the detents are in the same place.

See all the pics below.

Before I go ordering piece by piece from KAK is there any other part I need to measure?

undeadchew

marriedwchildren256

First off the print looks really good, nice job.

I also had issues with my PSA AR10 LPK, mainly with the front takedown pin, and the bolt catch, I was stubborn and modded the lower to let the AR10 bolt catch but, mags don't activate the catch as it's too off centered.

I also modified the front pin plate, and exchanged the ar10 bolt catch for an ar15 bolt catch instead, but doesn't stick out enough to be easily actuated by hand.

hoffmantactical

marriedwchildren256 This is really good info! PSA does a really poor job following the LR-308 standards. The bolt catch is a known issue, but the pins are a knew problem.

marriedwchildren256

undeadchew

I like it but I used the metal plates from HT for the front pin.

I really don't want to modify the upper for 2 reasons. 1. That's another print but more importantly 2. I only know how to use tinkercad which doesn't allow files this big.

I ended up ordering the ar15 to ar10 conversion from KAK. It's got everything I think will be off dimensionally. Unfortunately it's just going to take another week to get. I may see if gun stores in the area have piece parts but I don't have a lot of free time during normal business hours to run around.

FEAL

I have the same issue with the front take down pin, the pin doesn't go in far enough to let the detent get to its detent hole. If you know of a brand of take down pins that would work, could you recommend them? I tried extending the detent slide hole in the pin, but it must be hardened and i cant with a drill. Im sure the rifle will operate fine, but am a bit worried about the front pin walking out while firing.

gnilreib

Here's an earlier thread about the bolt catch:
https://forum.hoffmantactical.com/d/191-sl-308-bolt-catch/6