The B&T Booster OLS adapter 13.5×1 LH is a thread-specific mounting part for B&T's OLS pistol suppressor system (B&T part no. 12-2748). It is cut for a 13.5×1 left-hand metric thread, the pattern found on many European-made pistol barrels, and lets OLS booster hardware run on a barrel with that thread. It is a mounting component only, not a suppressor body. B&T sells the same adapter in a 1/2×28 version, so the right one depends entirely on the thread your barrel carries. Check your muzzle thread pitch and direction before you order it.

Key Specifications

• The thread pitch is 13.5×1 mm, a metric pattern that will not cross over to inch-pitch threads.
• The thread direction is left-hand, so it tightens counterclockwise onto the barrel.
• It belongs to B&T's OLS suppressor system, made to work with that line's booster hardware.
• It is a mounting component, not a suppressor, so it ships without a suppressor body.
• B&T also makes a 1/2×28 version, which makes thread choice the only decision when ordering.

Frequently Asked Questions

Will this fit a 1/2×28 barrel? No. This adapter is cut for 13.5×1 left-hand threads. B&T sells a separate 1/2×28 version for barrels with that thread.

Is this a complete suppressor? No. It is a thread adapter for B&T's OLS booster hardware and does not include a suppressor body.

Buy the B&T Booster OLS Adapter, 13.5×1 Left-Hand Thread

Getting the thread right is the whole job with a part like this, and buying the factory adapter keeps the OLS hardware matched to the barrel the way B&T designed it. Order it from our Lubbock, Texas gun shop for fast direct shipping, and browse more B&T parts and accessories while you are here.