Upper Receivers & Caliber Conversion Kits

Derya, Island Complete Upper, Slide, 3.86" Ported Barrel, Optics Ready, Fits GLOCK 19 Gen 4 and Derya DY9 Frames, Melonite Finish, Black

Cmmg upper group resolute mk4 5.56x45 14.5" p&w no bcg or ch Other Features: Partial upper group, no bolt carrier group, no charging handle, cmmg eml 13.5 m-lok handguard, svd brake pinned and...

The Gunner profile is a blend of two of the best performing profiles of all time, Govt and Pencil. Faxons Gunner profile combines the durability of the Govt profile with the weight savings and...

The art m5e1 platform starts here, with the m5e1 upper receiver.The m5e1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself.Through superior...

Agency Arms was created in January of 2015 and created by weapons operators themselves interested more in the functionality than the visual appeal. Agency Arms is a Veteran and LEO owned...

Mk22 barrel 300nor 26" coyote.Conversion kit.Caliber: 300 Norma MagnumBarrel: 26"Finish: Coyote Cerakote

Mrad conversion kit 6.5cr 17".Caliber: 6.5 CreedmoorBarrel: 17"Finish: Black

Beretta conversion kit 22lr m9 with 15rd mag blued Other Features: Does not fit any older model 90 or 92 series with frame mounted safety.

Beretta conversion kit 22lr m9 with 15rd mag blued Other Features: Does not fit any older model 90 or 92 series with frame mounted safety.

Magazine conv kit b-14 sa.Ba0031.

This mck is adjustable to 4 different barrel lengths.It comes with 4 charging handles & 2 gun doors, to accommodate different slide serrations.The kit is also equipped with the mckgen2 stabilizer,...

Caa Mck Advanced Kit, Fits Xd/xdm/xd Mod.2 And Xdm Elite In 9mm/40s&w Mcksa9taModel: MCKFit: XD

Chiappa Firearms M422-gen Ii Pro, Rifle Conversion, Upper Receiver, 22lr, 16" Heavy Barrel, 11.8" Forend, 8 Position Picatinny Rail, 2 Magazines, Black, 500.095Model: M4-22 G2Product Type: UpperFit:...

Cloak industries mfr 56 belt fed upper 5.56 nato black Other Features: Complete upper w/2-position gas block handle,100rd plastic nut sac,100 links w/starter tab,cleaning kit,h3 buffer and...

Cmmg complete upper group resolute mk4 5.56 16.1" black Other Features: Complete upper group, cmmg eml 15 m-lok handguard, a2 flash hider 1/2x28 threads, non-adjustable.750 gas block, creakoted...

Many of you love the 6.5 300BLK DISSENT so we decided to take it and crank it up to 11!... or how about 10.5? Giving you improved ballistics and an even more suppressor friendly length this all new...

Designed with the goal of utilizing as many existing AR15 components 300BLK gives shooters a variety of .30 Cal power to suit their taste. From subsonic to supersonic loadings with a long list of...

Pack some 30 Cal power into a pint size PDW. Perfect for your existing Mk4 DISSENT� lower or standard AR15 lower group this upper group combines utility innovation and unmatched style that lets you...

Let's face it the 6.5 DISSENT 5.56 is a ton of fun and it's rowdy! Now that we got that out of our system our ears quit ringing and we aren't seeing fireballs anymore we are able to bring the same...

Supplementing your exisiting DISSENT� with another upper or looking to build a new bufferless AR? The 5.56mm DISSENT upper group with a 16.1 barrel is a hard choice to pass up. Pair with a mil-spec...

Coming in with a barrel length of just 6.5 this DISSENT� upper group is one of the shortest 5.56mm available to date. Packing all the power of 5.56 in a platform this size doesn't mean giving up...

The 5.7x28mm personal defense cartridge has found home with the purposefully designed 6.5 DISSENT� upper group. This DISSENT upper group comes complete with BCG lower receiver 1913 picatinny rail end...

What can we say? Some of you just want to be like Dirty Harry. You want your favorite handgun caliber but you want that nice longer barrel. Well wait no longer! The all-new DISSENT 9mm Upper is...

CMMG� revolutionized the PCC world with the Radial Delayed Blowback� Operating System now it's the 9mm DISSENT's� turn to shake things up. Combining our patent-pending Compact Action and Radial...