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bolt carrier
A bolt is the part of a repeating, breech-loading firearm that blocks the rear opening (breech) of the barrel chamber while the propellant burns, and moves back and forward to facilitate loading/unloading of cartridges from the magazine. The extractor and firing pin are often integral parts of the bolt.
In gas-operated firearms, the bolt itself is housed within the larger bolt carrier group (BCG), which contains additional parts that receives rearward push from the gas piston.
The slide of a semi-automatic pistol is a form of bolt, as it contains the same parts and serves the same functions.
Brand new never used BCG for AR-15/M16 for sale. Nitride finish. Bolt material is 9310 alloy. Bolt is marked MPI as shown.
Not sure on brand, but thinking it might be AO Precision.
Cash only. No trades. Face to face in Lake Oswego. Will ship for extra.
Almost new BCG from Aero Precision. Was put in a rifle and used with a few snap caps. I don't have the original box but I do have one from a different BCG that you can have. $125 cash if you can meet in the Seattle area and save me the hassle of electronic payments and shipping.
New unfired
Trades considered please note when offering trades please note trade value of your items or at least say I will trade this for that. Some of the specific parts I am looking for are 450 Bushmaster upper or parts, 20" 5.56 barrels, A1 and A2 upper receivers A2 rear sight...
LR-308 bolt carrier group Nitride unfired $180 Cash or USPS Money Order only.
I do not know the brand there are no markings. It is for DPMS style uppers.
I also have a couple of compatable barrels listed as well.
For Sale,
Brand new in box
Aero Precision - 5.56 Bolt Carrier Group, No Logo - Black Nitride
Features:
No Aero 'A' Logo
M16-cut carrier
Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)
Carrier has forward assist serrations
Black Nitride Finish - advanced lower friction coating...
Looking to buy a new BCG for an AR. I've always had good success with my BCMs, so looking to continue with what works. Color doesn't matter, but I'll throw in extra for FDE. Also need a charging handle if you want to do a package deal. Thanks in advance.
https://www.lwrci.com/LWRCI-Direct-Impingement-Bolt-Carrier_p_223.html
Brand new, unused, straight from LWRC website. Bolt carrier only. True self-lubricating Nickel-Boron carrier for your mil-spec AR-15. Not that imitation stuff you get from Ares or AimSurplus. Full-Auto rated. One-Piece...
Pending sale
Brand new Aero Precision AR 15 BCG.
Was bought as an extra BCG. Was installed into a rifle and taken back out without shooting.
Looking to trade for a nice AR trigger
local pickup/trade only.
Young's Manufacturing 601/SP-1 style parkerized non-serrated BCG new $165
Spikes Tactical 5.45x39 NiB $220 (NO LONGER AVAILABLE)
Reduced Mass Style Lightly Used Spikes Tactical NiB Bolt Carrier Groups 5.56/.223 $210
More info Here...
16" lightweight, threaded (currently had thread protector on it), dedicated 22lr barrel, titanium bolt barrel, and bolt from 2A Arms. Forged upper receiver. The barrel has a steel liner with aluminum fluted sleave very lightweight yet still ridged there is an issue with the cases being buldged...