LMT Defense CQB MRP Defender CQBPS16 5.56 NATO Black AR-15 Rifle

A: Charles since this information is not in the listing, I would ask Buds directly at LiveChat (available from 9AM to 9PM 7 days a week), the "Blue Chat Button" at the bottom right of the page, or phoning at (859) 368-0371 (available 9AM to 9PM EST Monday through Friday). ---- If they don't know I would ask Lewis Machine & Tool Company at 309-732-9527 or by email inquiry here : https://lmtdefense.com/contact-us

A: since this information is not in the listing, I would ask Buds directly at LiveChat (available from 9AM to 9PM 7 days a week), the "Blue Chat Button" at the bottom right of the page, or phoning at (859) 368-0371 (available 9AM to 9PM EST Monday through Friday). ---- If they don't know I would ask Lewis Machine & Tool Company at 309-732-9527 or by email inquiry here : https://lmtdefense.com/contact-us

A: James, I would confirm with LMT Customer Service since they say (Monolithic rail platform piston barrels utilize a standard/suppressed option gas block with removable piston rod and spring). LMT Contact is https://lmtdefense.com/contact-us/

A: You could use Chat now and ask someone from Buds.

A: James, This piston gun does not have an adjustable gas block.

A: I would suggest you call LMT at Telephone Number Sales Dept: 309-732-9527 Main Line: 309-787-7151 or https://lmtdefense.com/contact-us/