The Q Rearend XL in 3/4×24, also sold as the Cherry Bomb XL Rearend, is the Quickie Fast-Attach muzzle brake Q bored for .338 (Q part no. RE-CBXL-3/4X24). Q built it specifically for the 8.6 BLK and designed it to run with the Short Chop and Porq Chop silencers. It is basically a Cherry Bomb with a little more grip, adding wrench flats so it goes on and comes off without drama. The 90-degree shoulder suits barrels where you want everything lined up clean, and the 3/4×24 thread is the one that separates this version from the M18x1.5 Rearend XL.

Key Specifications

• The thread is 3/4×24, so your barrel must be threaded to that pitch.
• The bore size is .338, sized by Q for the 8.6 BLK.
• The mounting system is Quickie Fast-Attach, the interface Q uses across its silencer line.
• The 90-degree shoulder and rear wrench flats make it suitable for square-shoulder barrels and easy to tighten.
• It is for square-shoulder barrels only, since it is not directly compatible with Q tapered-shoulder barrels without the proper taper adapter.

Frequently Asked Questions

What thread does this Rearend XL use? This version is 3/4×24 with a .338 bore. Q also lists the Rearend XL in M18x1 and M18x1.5, so match the thread to your barrel.

Which silencers is it designed to run with? Q designed the Rearend XL to run with its Short Chop and Porq Chop silencers, and built it specifically for the 8.6 BLK.

Buy the Q Rearend XL Muzzle Brake, .338 Bore, 3/4×24

For an 8.6 BLK with a 3/4×24 square-shoulder barrel, this is the Q brake made to match. The taper and wrench flats mean repeatable alignment and an easy install. Order it from our Lubbock, Texas gun shop for fast, insured shipping and see more AR muzzle devices for your rifle.