[SHOT 2026] MK Machining Showcase ‘Straightbull’ Rifle
Over the last couple of years the guys at MK Machining have been working up their MK2.6 bullpup rifle chassis series. This year at SHOT Show they had some brand new prototypes of a new type of bullpup - a straight-pull.
If you’re wondering what a bullpup is, its a rifle with the action and magazine behind the trigger mechanism and if you’re wondering what a straight pull is, it’s a type of manual-action firearm that uses a direct back-and-forth motion to chamber and eject cartridges. MK Machining has combined the two concepts.
The ‘Straighbull’ is still very much in the development stage. Two prototypes, still with unfinished receivers were on display and after having a play with them I was impressed by how smooth the straight pull action was and with the rifle being a bullpup it fell under the hand nicely.
MK Machining plans to offer interchangeable bolt heads with .223 up to .338 Lapua case head compatibility. The rifle will also enable left or right hand cycling and ejection. The smaller variant was very compact with plans to offer it in an 18 inch barrel configuration which will have an overall length of 26 inches.
In terms of magazine compatibility they plan to have it feed from AICS SA, LA, AR15 or AR10 pattern magazines - depending on chosen caliber. This is achieved by using interchangeable magazine wells and of course swapping out actions and barrels.
They have a number of patents pending on features and while in pre-production they’re still making refinements, with plans to add an articulating dust cover and cut down the rifle’s weight.
Managing Editor: TheFirearmBlog.com & Overt Defense.com. Matt is a British historian specialising in small arms development and military history. He has written several books and for a variety of publications in both the US and UK. Matt is also runs The Armourer's Bench, a video series on historically significant small arms. Here on TFB he covers product and current military small arms news. Reach Matt at: matt@thefirearmblog.com
More by Matthew Moss
![[SHOT 2026] Palmetto State Armory's Fresh Crop Of New Guns](https://cdn-fastly.thefirearmblog.com/media/2026/01/24/23281/post.jpg?size=350x220)
![[SHOT 2026] Gunslinger Tactical SeraphIM Multi-Light/Laser Device](https://cdn-fastly.thefirearmblog.com/media/2026/01/28/02151/post.jpg?size=350x220)
![[SHOT 2026] Griffin Armament Created A New Silencer Material](https://cdn-fastly.thefirearmblog.com/media/2026/01/24/00412/post.jpg?size=350x220)
![[SHOT 2026] RCBS MatchMaster Precision Case Trimmer and New Products](https://cdn-fastly.thefirearmblog.com/media/2026/01/22/01061/post.jpg?size=350x220)
![[SHOT 2026] Arken's 3000 Yard $600 On-Gun Laser Rangefinder](https://cdn-fastly.thefirearmblog.com/media/2026/01/23/16321/post.jpg?size=350x220)
Comments
Join the conversation