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bolt carrier group
A bolt is the part of a repeating, breechloading 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 firing pin and extractor are often integral parts of the bolt. The terms "breechblock" and "bolt" are often used interchangeably or without a clear distinction, though usually, a bolt is a type of breechblock that has a nominally circular cross-section.
In most automatic firearms that use delayed blowback, recoil or gas operation, the bolt itself is housed within the larger bolt carrier group (BCG), which contains additional parts that receives rearward push from a gas tube (direct impingement) or a piston system.
The slide of a self-loading pistol can be considered a bolt carrier, as it contains the same components and serves the same functions.
Brand new and still in the wrapping.
Purchased with intent of building an AR10 but switching directions. Asking $160
Pictures from the website with info.
Trades:
300BLK Lancer mags
DPMS Upper with 5.56, 1/9 twist HBAR barrel, 500ish rounds
No charging handle or BCG
I remove the A2 site and installed a low profile, stainless gas block.
Black Magpul furniture
Beautiful new build. Gauged the headspace, pieced this beautiful upper together using a stripped forged Milspec 7076T6 aluminum upper and a 12 inch BCM QRF(Quad rail free floated), it has a Surefire closed tined flash hider suppressor mount muzzle device, a Microbest Phosphate bolt and carrier...
Upgraded to a Daniel Defense Mk18 upper, so my old one is now up for sale
- Started as a stripped Ballistic Advantage upper in 10.5". 1/7 twist, 5.56 chambered
- Midwest Industries quad rail handguard in 9.5" length
- Yankee Hill Machine muzzle brake
- BCM angled foregrip
- Primary Arms SLX red...
Brand new in box, unfired, comes with all acessories, sticker sheet, still covered in G96 from the factory. Consistently out of stock, my loss is your gain. Price is shipped from Alabama (I’m away for school at the moment but check out my 100% positive feedback) via PayPal friend and family or...
As new in box, unfired, planned on a pistol build but going a different direction. No charging handle. Comes with BCM BCG as well. Still covered in the G96 BCM puts on their uppers. Asking $775 shipped. Very hard to find in stock and I am just asking what I have into it. Paypal friends...
Practically new Aero m4e1 enhanced upper
20" Faxon Match Series Fluted upper Type II
https://www.primaryarms.com/faxon-firearms-heavy-fluted-20in-6.5-grendel-type-ii-ar-15-barrel-with-np3-finish
VG6 6.5 Muzzle brake
Aero 6.5 BCG Type II
Aero Precision M4E1 upper
Aero Enhanced 15" mlok rail...
Parting out my LMT MWS-H. I've moved mostly to bolt guns in larger calibers and this never gets used. All parts have 18 rounds of IMI 175gr Razorcore on them. I shot 6x 3 round groups at 100 yards off a bipod with no rear bag and the largest group was .8"
Payment: Cash, Zelle or PayPal/FF
-LMT...
I have a couple of AR15 BCGs that can go.
#1: Aero Precision No-Logo Nitride, has seen less than 20 rounds. MPI marked bolt. $75
#2: I believe this is a Lead & Steel branded BCG, so probably ToolCraft OEM. No logo, phosphate coated, chrome lined gas key and bolt channel. MPI marked bolt...
16 inch .308 Black Aura Tactical upper
PSA bolt carrier group and charging handle
Nikon P-tactical .308 scope (with box)
Monstrum scope mount
5 boxes of.308 ammo
5 magazines
Charging handle, hand guard and muzzle device have blemishes on them- see pictures.
Upper worked great on my PSA gen 2...
NIB Aero stripped upper, black
NIB Aero upper parts kit
NIB Aero bolt carrier group, black nitride
All three above for $160 OBO
They're all brand new from Aero. I received these as warranty replacements but I already bought the parts I needed, so these are just extra.
Also:
$10 Lightly used...
Picked up a MARS-H lower and an 18" Stainless .308 barrel so now I'm looking for a good deal on an Upper receiver and BCG
Let me know if you have one you'd let go. I have a cash or other AR parts/High end optics for trade.
Thanks