Details
Details
The Expo Arms Complete 5.56 NATO AR 15 Bolt Carrier Group has been engineered for lasting performance and delivers dependable operation shot after shot. Each component is carefully machined to ensure tight tolerances and consistent lock up. Designed for shooters who value reliability this BCG provides smooth cycling and easy maintenance thanks to its durable corrosion resistant finish. It drops in quickly to replace or upgrade your current setup offering the trusted performance that keeps your rifle running clean and consistent.
Features:
- Compatible with 5.56/.223/.300 BLK
- Salt Bath Nitride finish
- 8620 steel carrier with M16 profile
- 9310 steel bolt face
- Magnetic particle inspected
- S7 tool steel extractor
- Billet gas key with staked screws
- 4340 cam pin
- Stainless firing pin
Specifications
California Prop 65 warning
WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.Ratings & Reviews
38 reviews
👍
by Deon -
Great quality and finish, especially for the price. Haven’t put but a few rounds through it but I cant see a reason why this thing won’t last thousands of more rounds than what I’ll ever put through it. Great bolt especially for someone with several ar15’s this makes for a great spare.
Happy so far
by Adam -
Ran smooth. This was only around 50 rounds but no issues. Smooth surfaces/finish, no complaints this far. Primary Arms is my first stop when looking for anything.
Great for the price
by Daniel -
A ok. Not chrome lined but that’s ok for the price
Can't Go Wrong 300BLK or 5.56
by SouthTXGunner23 -
*PLEASE FIX TO MAKE THIS 5-STAR PLEASE*
Picked this up while looking for a spare BCG, caught it on sale for 55, and couldn't be happier with it. It has a nice, solid and smooth nitride job, staked better than some $100+ BCG's which was a surprise. Decided to run it and ended up completing a friend's 300BLK build with it. Has seen and ran smoothly with all types of ammo, 300+ rounds flawlessly so far and can't see that changing any time soon. As always, PA delivers quality for less, thanks for yet another flawless transaction!!! BTW, only 4 Stars because it wouldn't allow me to select 5 Stars, which this product deserves all 5 Stars and then some!!!
Bad.
by terrance -
Bought on labor day sale,recieved today. Does not even slide into my upper reciever tried to force a bit and removed, found scratches down both sides of reciever where i tried to install. Dont waste your time or money, has to be out of spec. Never seen this before.
Not bad!
by RICHARD -
Picked this BCG up for a budget build I did for a buddy of mine! Fit and finish is ok! Gas key was well staked and despite the somewhat rough tool marks it cycled flawlessly and had zero issues after 200 rounds! I would recommend for budget builds for plinking or as a backup BCG! Reliability will be determined after extended use!
Precision defense bcg
by Tom
Very nice bcg. Machining is great & the nitride treatment is way better than standard phosphate. Would highly recommend especially for the price
Rough machining...
by Phil -
Kind of a turd... machine marks all over it and I mean ALL over it. I took a gamble and lost. Very rough machining. I'm going to send a few rounds with it and see how it does.