Bolt assembly for M-15/M-16 or M-4 machined from Mil-Spec Carpenter No. 158® steel, shot peened for increased strength per Mil-Spec, includes Mil-Spec 8620 tool steel extractor w/ viton insert and improved design spring that dose not require an o-ring, Mil-Spec ejector and spring.
HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected)
Complete Mil-Spec Bolt includes:
Finish looks good but no time to try it out yet. I will use it to replace semi bolt on my lot. Keep the lot bcc as a spare for my rifles. Shopped in a timely manner without problems. Unknown on 22nd Feb 2016
This Coating is superior to any other. Besides the coating the owner is always making sure the parts he uses are only the best, if he finds any issues he wont sell them. The other thing about buying this product is the customer service, I have Ordered other pars from many other popular companies and have been in the resale business for over 20 years and no one has impressed me like the owners with Cryptic Coatings. I enjoy speaking with them every time and they take care of their customers. Leonard Aguina, California. on 11th Aug 2015
I had ordered a bolt carrier group in the mystic bronze and was extremely pleased with it. It wasn't until after I had that installed I realized I wanted the bolt and cam pin to go with it. They didn't have an online option to coat just the bolt. I got ahold of Cryptic Coatings to see what they could do and it was in the mail shortly after. Very happy with everything. Fit and finish is perfect! Definitely will buy from Cryptic Coatings again. Alec Bunfill on 5th Jun 2015
This is the nicest AR bolt I have ever dealt with. The tolerances are superb. I wish I had known about cryptic coatings when I first started my build. The customer service is first rate. My only regret is not getting my complete BCG from here. But my next build will run a full cryptic coatings BCG. Thank y'all. Matthew Mills on 8th Mar 2015