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This lower is designed to work with a bear creek arsenal side charging upper.
It requires
-1x AR FCG
-1x carbine buffer tube kit (no castle nut or back plate)
-1x buffer detent and spring
-1x usgi mag release
-1x bolt hold open
-1x ar pistol grip
-1x 3-48 1.5” screw (for pinning the bolt hold open in place)
-4x 6-32 2” socket head screws (for reinforcing back section)
-1x 6-32 1” socket head screw (for reinforcing the pistol grip)
-1x 8-32 square nut and 5/8” 8-32 socket head screw (for indexing the buffer tube)
-2x ¼” 1.5” long screw posts or hitch pins
LBRY Tags: ar lower; lower; ar
1432
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bull pup rimfire magnum AR lower .22 mag or .17 HMR
this build requires a bear creek arsenal side charging .22 magnum or 17 hmr upper to work. I use a 17 hmr 7.5" bbl and it only cycles reliably unsupr…
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BETA: chonkey boi lower for mil spec upper, v6
to assemble the lower you need the following:
-4x 2" 6-32 socket head screws (inserted through the back to strengthen the receiver extension)
-2x 1" …
614
18
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22 cal AR 322 mag round body v2
this is a pistol that uses a CMMG ar22 bolt carrier and barrel, and sig p322 magazines and mag release.
hardware required:
-1x 8-32 1 1/4" socket h…
483
10
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AR lower mini30 mag well for BCA side charging 7.62 upper BETA
this is a lower that lets you use ruger mini 30 7.62x39 OEM factory mags in a Bear Creek Arsenal 7.62x39 side charging upper.
it requires
-1 oem rug…
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