AR 15 Colt large pin .169

[James Dixon]

I have a colt sporter AR15 with trigger pins .169 which I was told was large pin, how ever replacement pins for the large pin come .172 and they say not to ream receiver,? front pin has started to travel and I need to replace, any suggestions , will this fit ?
small pin replacements are .164 which are large for small pin as well, .154, does the pin need to be fitted?

 

[457ciSBC]

KNS large pins are .170

Replacement Trigger/Hammer Pins

Rifle: AR-15, M-16. Sizes: Small .154 dia.; Small .1555 dia.; Large .170 dia. Stainless steel pins. Match grade stainless steel replacement pins for trigger and hammer. CNC machined for correct fit…

www.knsprecisioninc.com

 

[nicholst55]

If you're dealing with a semi-auto AR-15 lower, it may be more cost effective to simply replace the lower. If a select-fire lower, these may be your answer. I recommend having a gunsmith or machinist do the drilling and tapping for the bushings, so the holes are straight and properly aligned.:

ETA: Just noticed that they're out of stock. Someone else probably carries them, or something nearly identical.

STBA™ - AR15/M16 STAINLESS TRIGGER BUSHING & HEX HEAD - Tactical Innovations

STBA™ - STAINLESS TRIGGER & BUSHING ASSEMBLY for AR15/M16Now you can have black nitride precision CNC machined Hex Head STAINLESS STEEL hammer and trigger pins on STAINLESS STEEL bushings in your new Tactical Innovations lower receiver or you can easily retrofit yo

www.tacticalinc.com