I have a 14.5" AR piston upper on order that I plan to run suppressed with my Sig SRD762ti-QD can. The Sig QD mount system is a 2-piece design. The QD mount screws onto the barrel, the muzzle device then screws into the mount. If I use their flash hider setup, this will add just under 1.52" to my barrel length giving me over 16" total. The 2 piece setup would need fused together for ATF compliance with perhaps silver solder. The suppressor seats on the mount at the tapered area.
Here is my current dilemma. Do I run the upper on a pistol lower using a brace, have the QD mount/muzzle device pinned & welded, or go the SBR route?
Pistol w/brace
pros:
- least expensive (already have a lower I can use)
- muzzle device is not permanently attached, easily removed
- no waiting period
- no tax stamp required
cons:
- not a fan of an AR pistol this long in regards to asthetics (braces aren't sexy)
- prefer an actual stock vs. brace in regards to comfort while shouldering/shooting
Pin & Weld
pros:
- puts barrel at 16" for use on a rifle lower
- no tax stamp requirement
- can swap to different rifle lowers if desired
cons:
- additional cost (shipping and gunsmith)
- muzzle device is permanently attached, not easily removed
- fusing the mount and muzzle device together could be tricky for the gunsmith as that seam needs to remain flush so the suppressor can slide past that area
- waiting period due to shipping both ways and the actual time at the gunsmith
SBR
pros:
- ability to use a stock instead of a brace
- muzzle device is not permanently attached
- my first SBR, which has appeal all on it's own
cons:
- additional cost
- tax stamp required
- waiting period (which could be minimal going by recent wait times)
- have to notify ATF of any out of state travel (I frequent a range in Ohio)
- have to get lower receiver engraved
Here is my current dilemma. Do I run the upper on a pistol lower using a brace, have the QD mount/muzzle device pinned & welded, or go the SBR route?
Pistol w/brace
pros:
- least expensive (already have a lower I can use)
- muzzle device is not permanently attached, easily removed
- no waiting period
- no tax stamp required
cons:
- not a fan of an AR pistol this long in regards to asthetics (braces aren't sexy)
- prefer an actual stock vs. brace in regards to comfort while shouldering/shooting
Pin & Weld
pros:
- puts barrel at 16" for use on a rifle lower
- no tax stamp requirement
- can swap to different rifle lowers if desired
cons:
- additional cost (shipping and gunsmith)
- muzzle device is permanently attached, not easily removed
- fusing the mount and muzzle device together could be tricky for the gunsmith as that seam needs to remain flush so the suppressor can slide past that area
- waiting period due to shipping both ways and the actual time at the gunsmith
SBR
pros:
- ability to use a stock instead of a brace
- muzzle device is not permanently attached
- my first SBR, which has appeal all on it's own
cons:
- additional cost
- tax stamp required
- waiting period (which could be minimal going by recent wait times)
- have to notify ATF of any out of state travel (I frequent a range in Ohio)
- have to get lower receiver engraved
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