$33.99
14 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
If you're running a heavy bull or target barrel and standard .750 gas blocks won't slide on, this CMMG piece is exactly what you're after. It's bored to a .936 inside diameter, which is the size you'll typically find on thicker profile barrels built for precision and heat management. CMMG machines it from 4142 chrome moly steel, so it holds up to real-world heat cycling and won't flinch under sustained fire. The finish is a clean black that blends right in under a rail.
Gas block sizing comes down to the diameter of the gas journal on your barrel, and the bigger .936 bore is the go-to for bull and target barrels where a .750 simply won't clear. Before ordering, it's always smart to measure the journal on your barrel to confirm you need this size rather than a .625, .750, or .875. Get the fit right and this block seats snug and square, keeping your gas port lined up the way it should be.
The low-profile shape is the whole point here. It sits tight to the barrel so you can run a free-float handguard or one-piece rail right over the top without any interference. That opens up your options for longer forends, more rail real estate, and a cleaner look up front. It works with both AR-15 and AR-308 direct impingement setups, so whether you're finishing a varmint rig or a Creedmoor build, it slots right in.
Installation is straightforward. The block ships with the set screws you need to lock it down, and pairing it with a matching gas tube kit rounds out the system. CMMG has been building AR components for years, and this is the kind of no-drama part that just works when you bolt it on and get back to shooting.
This block is bored to a .936 inside diameter, which is the size used on bull and target profile barrels where the gas journal is thicker than a standard barrel. Standard AR-15 barrels usually take a .750 block and pencil barrels take a .625, so the .936 is specifically for heavier profiles. Always measure your barrel's gas journal before ordering to confirm you need this size.
Yes, that's the main reason to go low profile. The compact shape sits tight to the barrel so a free-float rail or one-piece handguard can slide right over it without contact. It gives you plenty of room to run longer forends and keep a clean, uncluttered look up front.
It ships with the set screws required to mount and lock the block to the barrel. You'll want a compatible gas tube to complete the system if you're not reusing an existing one, and CMMG offers matching gas tube kits for that. A roll pin secures the gas tube to the block on most builds.
It's compatible with both AR-15 and AR-308 direct impingement platforms as long as your barrel has a .936 gas journal. Many larger caliber and precision barrels use this diameter, so it's a common pick for Creedmoor and .308 builds. Confirm your barrel diameter and gas system length before you order.
| UPC | 815835012414 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 55DA36F |
| Color | Black |
| Length | 6.1000 |
| Model | |
| Product Type | Gas Block |
| Style | Low Profile |
You must be logged in to post a review.
Reviews
There are no reviews yet.